I don't watch Streams too much, so I yet to have a favorite one... Kingdom Hearts name almost "sold" me to see Grimmmz though.
I watch LetsPlays for the game I know I'd never buy sometimes, but I like to watch on my own terms not to free time for them.
Yeah he has been playing a bunch of Kingdom Hearts right now though I don't fancy it as much. Lets plays are always good to watch to check out the games you can't get and play yourself, or if someone you enjoy watching plays them.