Favorite cliche - hmm. It'd probably be the comedy-relief sidekick. It's nice if they have personality and depth, though.
But no other cliche annoys me more than the little kid with all the answers. "I knew it all along, I TOLD you guys! But no one listens to me cause I'm a KID! *scoff/rolleyes*"
lol, we're kinda opposite on that. Nothing annoys me more than the comedy relief sidekick... but then again, It's probably because I've seen so many movies and comics where they were so exaggerated and overdone to death.
and I like the clitche of the kid with all the answers... provided that he's not competely the "know it all", if you know what I mean. But I like it when a Kid who witnessed something HUGE going on, if no adult believes him/her, takes it into his/her hands to do something about it.
It'd be nice if there was an adult who would believe him/her once in a while though.