When Shrek is fighting against a LOT of knights, who are under orders to kill him to win a chance to rescue a princess, he ends up in a setup remarkably similar to a wrestling arena. Egged on by a bloodthirsty granny no less, he employs this trope on an unfortunate knight, much to the audience's delight.
Granny: The chair! Give him the chair!
In The Lego Movie, Bad Cop takes down an army of Mecha-Mooks. With a chair. It's the culmination of a Running Gag involving him repeatedly throwing chairs whenever he's in a bad mood - said Mecha Mooks are not the first ones he's taken out this way. In the "Behind the Bricks" video released to promo the film's theatrical release, he's nearly ready to do it to President Business after the latter reveals he actually attempted to kill the other cast members.
One of the Lizzies in The Warriors gets a chair broken on her face when they attack The Warriors.
Used in The Mummy when Brendan Fraser's character stops the cowardly Beni from running away. As he's striding toward Beni, he grabs a wicker chair without missing a beat and throws it at Beni's legs, tripping him.
Improbable weapon master Jackie Chan is rather famous for his use of seating material
The Avengers introduces Black Widow tied to a chair and being 'interrogated' (as in, it's her doing the interrogating, not the other way around). At that point, when she's called to come in, she uses the chair she's tied to to kick copius amounts of ass.
In The World's End Andy (Nick Frost) ends up kicking a good deal of ass by dual-wielding two bar stools.
Averted in The Alligator People. When Paul is fighting Manon to rescue his uncoscious wife from being molested, he grabs a chair, but Manon quickly yanks it away from his hands, followed by him socking Paul to the jaw.
Played upon frequently in Discworld, where brawls in the BrokenMendedBrokenMended Drum are an organized sport, complete with a point system and named plays.
Also mentioned as why people who have not read the Marquis of Fantailler's book about The Noble Art of Fisticuffs tend to win against people who have.note "The last words of a surprisingly large number of people were 'Stuff the bloody Marquis of Fantailler—'"
Harry Dresden uses a chair in the first book. He lampshades the "splintering wood" part as the chair is a very solid one, and the barman actually has to check that the guy is alive afterwords.
In The Dresden Files, Thomas does this during Turn Coat to his intolerable cousin, Madeline. He breaks the chair, which is more impressive than it sounds, since the chairs are steel.
Not at all comedic in Sienkiewicz Trilogy, where a minor (but very large) character uses an 8 foot solid oak bench in a bar fight. It crosses into Telephone Polearm territory and largely contributes to the other side getting wiped out.
Defied in The Man Who Never Missed. The chairs in Khadaji's bar are bolted to the floor to avoid this trope. In fact, he uses the ability to overcome the bolts as a hiring test for his bouncers. HeavyworlderBork does it one-handed.
Bond uses a chair in From Russia with Love to defend himself from Rosa Klebb's poisoned knitting needles, and pins her to a wall with it. She is then captured by his fellow agents, but not before she manages to land a hit on him with a small blade on her shoe, which is also poisoned.
Captain of Largo's yacht in Thunderball became completely loyal to him after Largo smashed a chair over his head for not following his orders.
In The Spy Who Loved Me, Vivienne tries to slash Sluggsy with a knife, but he and Horror grab a chair each and overpower her. Things afterward look bad for her, but Bond's sudden arrival saves the day in the long run.
Smacking people with aluminum folding chairs (when the refereeisn't looking, of course) is a staple of professional wrestling, though in general it's considered to be a cheap move and thus used by Heel types. They're typically referred to by the announcers as being steel chairs to make getting hit by one seem more devastating.
WWE recently banned headshots with chairs in reaction to the countless concussion injuries caused by them.
Another use of the folding chairs is for a wrestler to place a fallen opponent's leg inside and jump on the chair to fold it flat, (kayfabe) breaking their ankle and thus giving the other wrestler a storyline excuse to be out of the ring for a while, either to recover from a real injury incurred elsewhere or to do something like star in a movie.
Subverted by the late Eddie Guerrero, who would bring chairs into the ring behind the ref's back, but instead of using it on his opponent, he would smack the mat with it, toss it to his opponent, and pull a Wounded Gazelle Gambit when the ref turned back around. This required Not Cheating Unless You Get Caught to be ignored, as the ref would disqualify the opponent despite not actually seeing the alleged chair shot. Though just as often, Eddie would use the distraction of the referee taking the chair away from his opponent to hit them with a low blow and pin them.
La Parka, luchador extraordinaire, known during his WCW tenure as the Chairman of WCW. Simply put, he was associated with chairs in a way few wrestlers will ever be.
Edge and Christian perfecting the double chair head sandwich know as the Con-Chair-To.
After splitting from Edge, Christian began doing the one-man-Con-Chair-To, where he'd put one chair flat on the ring, put the opponent's head on it, and then hit him on the head with another chair.
In a variation, Raven was known for his signature move of setting up a folding chair in the middle of the ring, and doing a drop toe-hold to smash his opponent's face into it.
Rob Van Dam was famous for his use of chairs with two of his finishing moves: the Van Daminator was a spinning thrust kick to the face, typically after tossing a chair the opponent would inevitably catch right in front of their face; the Van Terminator consisted of sitting an opponent in the corner, placing a chair (or collapsible garbage can) in front of their chest and face, then climbing to an adjacent corner and performing a missile drop kick. Not that the added weaponry was necessary to make that impressive, as that's a good fifteen feet he jumps, plus the height difference, and physics alone makes it devastating.
First step of Sabu's triple jump moonsault. Set up the chair, jump on it, jump to the top rope, moonsault off.
Lisianthus from SHUFFLE! often has to do this to her father in order to make him stop whatever inappropriate action he is doing at the current time.
In Persona 4, a folding chair is one of Kanji's more memorable weapons. Another is a school desk. It's also his weapon in Persona 4 Arena.
In the Super Smash Bros. series, Mr. Game and Watch uses a chair for his forward tilt attack. He doesn't so much swing it as hold it out in front of himself like a shield, but it'll still send anyone who touches it flying.
DLC character Beowulf of Skullgirls is a wrestler who wields a chair by the name of "The Hurting", a reference to his namesake's sword Hrunting. Yeah, that's right: his chair is so respected and famous that it has its own name.
Such a fight happens in Girl Genius, during the regularly scheduled bar brawl at the Jager tavern. To keep things friendly, there's a "No weapons" policy, but:
[Higgs hits a Jagermonster with a chair. Zeetha stares at him.] Higgs: ...what? Zeetha: You just said: "No weapons." Higgs: That wasn't a weapon, that was a chair.
Which leads to:
Jagermonster: Ow! Zeetha:Ha! That's not a weapon, that's a chair! [...] Jagermonster: Aie! Zeetha:Tankard! Not a weapon! [...] Jagermonster:Urg! Zeetha:That's not a weapon! That's a table!
The main protagonist in Great from KiwisByBeat uses a bar stool like a lethal weapon. He used it once when drunk in self-defense and managed to take out tens of gang ridden streets with it.
Inverted in The Boondocks where throwing chair is believed to be the actual cause of the brawl in the first place. It doesn't even need to hit anybody, throwing a chair into a crowd just spontaneously start a riot.
Though Riley brandishes a footstool against Huey on one occasion.
When The Simpsons took a vacation in Japan, Bart & Homer went to a sumo wrestling event; Homer ended up in the ring, Bart got the tag, and hit the sumo wrestler with a folding chair. The crowd booed them.
Anyone who has been involved in a bar fight knows that one's trusty seat is a useful tool to kick some serious ass.
There is actually a Chinese martial art based around using benches to fight your way out of taverns. Considering that 99% of all taverns/gambling den/restaurants at that time had big heavy pieces of sitting furniture readily available under...under hand, this is less of an out-from-under-the-ass-pull than pure genre savviness. Check out the demonstrations here:
The December 2011 Mall of America brawl involved quite a few thrown chairs.
"One night, while the customary pandemonium was crashing and thundering along at its best, a fight broke out. It was a surging, struggling, shoulder-to-shoulder scramble. A great many blows were struck. Twice [Pan-German party leader and racist Georg, Ritter von] Schonerer lifted one of the heavy ministerial fauteuils—some say with one hand—and threatened members of the Majority with it, but it was wrenched away from him; a member hammered [German Radical party leader and racist Karl Hermann] Wolf over the head with the President's bell, and another member choked him; a professor was flung down and belabored with fists and choked; he held up an open penknife as a defense against the blows; it was snatched from him and flung to a distance; it hit a peaceful Christian Socialist who wasn't doing anything, and brought blood from his hand."
Self-proclaimed King of the Youtube Walkthrough TheRadBrad has done this in ANY game whenever he finds something akin a a chair.
[Finds a chair during a game] The Rad Brad: FUCK YOU, CHAIR!... YEEEAAAHH...!
He even has Professional Chair Thrower in his Channel Description.