I like Family Guy. It does push the envelope of what's acceptable on tv, but it doesn't come close to South Park. I used to love South Park until the movie came out. I went to the theater to watch it and felt dirty. South Park, on many many occasions, has gone well past the line of what should be acceptable. but I'll give them the fact that they go after everybody and everything and nothing is sacred.
as far as being nominated for best comedy series....it's not a testament to how great Family Guy is, it's a testament to how bad comedy series currently suck. There ain't exactly any Seinfelds, Andy Griffiths, or Archie Bunkers out there to run it against anymore.