Berserk Button: He really doesn't like invasive DRM (security features in games to stop them from being pirated. An always-online requirement is a good example of this.) He actually used the fact that it was riddled with DRM as a reason for not including Diablo 3 anywhere on his list of the "Top 17 games of 2012."
He starts off most videos with a hearty "Greetings!"
Corpsing: Happens a lot in the "LGR Plays" videos:
In the Train Simulator 2012 video, his train derails... except instead of just going off the tracks, it flies through the air as if he hit a nuclear bomb.
In the Barbie Super Sports video, he discovers a completely pointless "feature" in the in-line skating mode: a water fountain at the store. He is insanely amused by it, and laughs probably even harder than he did in the Train Simulator incident.
Early-Installment Weirdness: Aside from his first video mentioned above, he made quite a few console reviews before finally settling on computer gaming.
Funny Background Event: At the beginning of his Sims 3 University review, he shows a few other games in the background as he holds the cover up, as a typical opening to his videos. One of them is the 2013 edition of SimCity, with "DRM" written in Sharpie over "City." It later shows up in the review of SimCity itself.
Hell Is That Noise: Invoked in LGR Plays Skyscraper Simulator, where starting a game provides an obnoxiously loud screech. Naturally, it's brought up multiple times as the main reason that This Is Gonna Suck.