Well, niche enough that I'm often the only person within my circle of friends I know of who plays them. I've got some in mind to cover like Caves of Qud (a really nice post apocalyptic Roguelike). I've also got a video in the works for the best games for lovers of necromancy (I got a real thing for the whole summoner archetype in games, especially necromancy).
The next video should be much more entertaining than the first - and a bit shorter.
Thanks for your video link and your insights about the video codecs. I'll have to experiment a bit.