check this out, Chef has quit over the "in the closet" episode I think its series 9. Basically they are taking the **** out of that trendy scientology religion (which Issac Hayes follows) Tom Cruis does as well and he's threated to pull out of promoting mission impossible 3 if the network doesnt pull south park lol

http://uk.news.yahoo.com/18032006/325/south-park-battle-scientology-heats.html