I think that the season finale and A History Channel Thanksgiving will be a two-parter. My idea is during the episode Cartman and a group of other boys (Craig, Butters etc) will try to summon the aliens to question them about Thansgiving while the parents and Kyle try to prove the history channel wrong, going to insane efforts to do so, only to discover (at the end of part 1 perhaps?) that Cartman and the history channel were right and aliens actually appear, sending Kyle into shock. This is entirely fanon, but I do suspect that it will be a two-parter. What do you think?