These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Arc Fatigue: Before his final battle in FFIV, he spent four episodes in his inventory explaining where he got each of the rare item he had collected throughout his journey. Not to mention there's a gap between the four videos he uploaded, resulting in about a year for him to finish those four episodes (from July 24th 2009 until May 2nd 2010 to be exact).
The majority of his FF8 LP so far has consisted of running around the Garden and Balamb Town playing cards. Thirteen episodes in, he hadn't even started the SeeD exam yet.
Angst? What Angst?: Though Final Fantasy IV is notable for having one of the highest good guy death counts in the series, Ron is generally quite upbeat. Averted when Palom and Porom became statues, he was sad for the next few episodes afterwards.
Base Breaker: Despite being a fan favorite, MulanMoulin's cameos seem to be the lowest rated videos.
By the end of The Cookie Crisis, she started to get into it and was clearly having fun, which made her more fun to listen to and thus more popular with Sir Ron's fans.
This trope now describes Andy The Anarchist, who first appeared in Sir Ron's "Let's Go Back in Time and @#$% Around" videos. Then he showed up without warning in the Braid LP, where his actions started him at "base breaker", and eventually led to... well, see below.
Crazy Awesome: Not only is Ron insanely skilled at games (along with his wicked accent and charismatic personality), but his character is this as well, which combines this with Determinator. In Super Metroid helped Samus destroy a Zebes that somehow regenerated by planting over 5,000,000,000 C4's. In his Contra 3 LP, he runs for seven hours and a half without stopping, before he meets up with Bill Rizer.
Between Super Mario World: The Cookie Crisis and Kaizo Mario World 2, Sir Ron Lionheart swam for five billion miles for seven hours and a half with only a bottle of Chateau Romani to keep him alive after the plane exploded him five billion miles away from where the other two people on the plane were exploded to. Luckily for him, CHATEAU ROMANI WILL ALWAYS KEEP YOU ALIVE!
Ear Worm : Since every game he plays at least has one or two of these, he likes to hum—or rather, sing—the ear worm with his laughter.
Growing the Beard: Sir Ron starts out with a normal, dull, LP of Super Mario 64, but by the 30th episode, he starts using his accent and becomes the FANTASTIC LP-er we know him to be!
Schedule Slip: Sir Ron disappeared for a hundred BILLION years! (for reality, see below). But this is often massively averted when he's active, as tends to upload multiple videos in a single day. But whenever something takes a long time or this occurs between uploads, he will joke that that the protagonist has has been "standing there for seven-hours-and-a-half now".
Starting with Braid, he no longer uploads multiple videos a day (that game in particular often went over a week without updating, probably due to all the editing he had to do—see "Curse Cut Short" above). The flip side of this is that individual videos are now much longer.
Series Hiatus: Sir Ron was busy studying or something, and he disappeared from the internet just before Christmas 2010. He didn't upload anything at all in 2011 (save for one random video that was just him rambling about nothing), and it was thought by many that he'd retired... until he suddenly reappeared in April 2012 to do an LP of Super Mario World romhack Super Mario Place (or, as he calls it, "Place Super Mario World!").
His LP of Final Fantasy VIII stopped at part 18 (when Sir Ron went offline for 16 months) and didn't get continued for a while.
So far averted with Braid. Sir Ron took down Part XII — itself long in coming — due to complaints about Andy The Anarchist's swearing. Over two weeks went by without any update or word, and it was thought that maybe he'd gotten fed up with LP'ing again. But he eventually reuploaded the video (with more editing) and continued the LP.
He seems to have disappeared once more. In early 2013, after some weeks of silence, he made a rare on-camera appearance - though, bizarrely, he said he was relaying a message from Sir Ron - explaining his computer had died and he wouldn't be returning for awhile. His last upload was in late 2013; it was a video of Diablo 3 gameplay but not a Let's Play of it, just a commentary-less video.