I figured that Farley fans and Rogen fans were the same people, but apparently not.Generally if it's someone I like I'll watch it. Chris Farley always got lousy reviews for his movies, but he was one of my favorites. On the other hand, I don't care how well-rated a Seth Rogen movie is, I avoid it like it's the plague.
If I'm flipping through movies or made-for-TV movies or documentaries or anything I'm not familiar with, for the purpose of giving something a try, I'll give the RT rating a consideration. Actually, I often find a ridiculously high rating (like 98) coincides with me not liking it, because it's too "artsy".

