Benzaie's Let's Play of Heavy Rain is shaping up to be this.
Kid: "It's not my fault that Jason is gone! It's not my fault!"
Benzaie: "Why you little..." * Mortal Kombat theme starts playing*
Benzaie's girlfriend : What are you doing ?!
Benzaie (naked, hiding his penis behind a computer screen) : I was just waiting for you, baby !
Benzaie's girlfriend : You know, mom is here...
Benzaie, pulling his thumb up : Then I guess it's my lucky day !
3D Custom Girl review : after telling us the game has an auto-mode, Benzaie show us all the wonderful things you can do with your hands while it automatically plays... like eating your breakfast. His girlfriend's desperate look as he's gleefully watching his hentai game is just hilarious.
There's also "Let's Fap to Marzgurl with Marzgurl", in which he used the program to create a hentai avatar of Marzgurl... while Skyping with her and with her giving the details about how the avatar would look.
From Do You Like Horny Bunnies, Screaming Mantis' snark:
Benzaie (narrating): "I open her legs and put the tip of my cock on her. She happily smiles and says,"
Mantis: Just the tip?
Benzaie constantly asks Mantis to imitate certain characters from other works, which is hilarious in itself (especially when he asked her to do a Miss Piggy voice). One bit in Part 2 had him ask her to do the most dorky voice possible, and described said voice as 'Imagine you're a screaming Pokemon fan'. This led to an awkward silence (as Mantisisa Pokemon fan), and Benzaie had to quickly add 'Who's fourteen'.
X-Change. The triumphant return of Kermit the Frog.
Also, Benzaie interprets the main character saying "my voice changed" to mean "my voice got really deep" rather than "my voice got as female as my body". Hilarity Ensues.
TGWTG Does Benzaie. Benzaie got really drunk and fell asleep while everyone was partying. So they held an impromptu Roast of Benzaie, complete with lots and lots of impressions and Benzaie-isms.
From Welshy's AniNite 2011 VLog: Him getting electrocuted by a fence (which everybody thought he was getting sexually exited by the panda inside the fence) and him scaring a lioness by doing the Gay Benzaie dance to her.
Also, his girlfriend having the same "Waddafuk? Dees ees boo-sheet!" reaction as him when she discovers there are no towels after a artistic experiment in an Austrian Museum.
From his Gamefap review of Box Hako, we have the reveal, at the very last second of the video, that his mental breakdown over the game's surreal ending is actually a scam for getting a blowjob from his girlfriend. Master Bate, you truly deserve your title.
Spoony's interpretation of the Cat God getting angry:
Spoony!Cat God (high-pitched, screechy voice): "I told meyou that I am the almighty Cat God! There is nothing that is impossible for meow! Do not (switches to low, growly voice) question me!" (Beat) Kneel Before Zod...
Benzaie!Ibuki: (narrating) I hear a cat's meow. (out loud) "Oh ,is there a cat here?"
Spoony: No, it's a moose.
Spoony being left by himself when Benzaie goes to the bathroom and not being able to get through the game due to embarrassment at all the sex scenes.
One of the sex scenes manages to time the Player Character's orgasm perfectly with the battery on Benzaie's computer running out, so the computer has to reboot. Spoony reacts by screaming like he's been stabbed, followed by gasping out a "I came so hard it crashed the computer..."
The entirety of the Computer & Spaceman short film. It's a Space Opera about a lonely Spaceman who goes through space making hamburgers out of everyalienspecies he encounters. Computer, his only friend, is psychotic.
The Misfits interrupting "Top 5 Brutal Murder Attempts in Jem and the Holograms" to talk about evil acts other people (including Jem!) performed. Pizzazz (a scenery-chewing Elisa Hansen) in particular steals the show.