What Guest Stars Do You Want To See Before The Show's Over?

russell brand played himself in a recent episode that should making be its way across the pond soon
I'd like to see Trey Parker and Matt Stone guest star as themselves. Their appearance as interviewees in the 20th anniversary special is one step closer.

that would be awesome. i'd like to see some veteran voice actors that appear in other cartoons, like kath soucie, eg daily, tara strong, cree summer, or billy west. i'd also like to see radiohead, the flaming lips, phil lamarr, michael cera, cameron diaz, mike myers, or julie andrews

I would wanna see Will Ferrel and Liam Neeson, but it would probably be funnier if they were fictional characters, not themselves.

liam neeson was the priest in the father, the son, and the holy guest star