Last night's episode was a jumbled mess. If it was supposed to be a "part 1", then so be it, but South Park does best when it picks one subject and rips the hell out of it. Last night's episode was scattershotted all over the place, and not particularly funny, especially Cartman's handpuppet routine.
I am Jennifer Lopez and I love tacos! I thought the episode was decent for what it was. A lot of shows just rehash a bunch of old clips on their anniversary shows. At least SP put the people in new situations. Tom Cruise jumping on the couch next to Oprah was pretty funny.
I actually think their recent episodes, asside from that one, have been pretty good social commentary.