The Cast Showoff: Averted. Garrett himself actually sings and plays guitar in a small band called Emrus but never actually performs songs in his videos, unless they're meant to be intentionally bad joke songs.
Missing Episode: His review of the movie Monster House was, for the longest time, nowhere to be seen on any of the sites he's featured on. Though he does still have a copy of it saved. Luckily, it, and a few of his other reviews not on YouTube, have since been reuploaded to his Vidme account.
Needs More Love: What some of his fans would no doubt say. In spite of his 6-year long presence on YT as well as being part of Channel Awesome for quite a while now, his channel has less than impressive 12,000 subscribers and an overwhleming majority of his videos have yet to reach 40,000 views, with some older ones even struggling to make it to 20,000. That probably explains why he's been noticeably less active in the past year, even though he still uploads new content every once in a while.