I mainly watch for Pterano and Rinkus. I like Sierra a bit, too, though. Somehow, I can't imagine Rinkus without Sierra. Yeah, actually before I was watching the 4th one. The next one will be the 12th...dang, I should've been specific and said LBT MOVIES! Ah, well. Just listening to "A Very Important Creature" has been put me in a better mood.
Edited the first post to be clearer. My brain is not a clear-thinking place right now. Sorry about the confusion.