Spiderpig
It's possible that there's nothing I will enjoy more in The Simpsons Movie than this bit with Homer and the Spiderpig. In fact, few things this year may amuse me more (that do not originate with the better half, of course). I'm refraining from saying "tickled pink"--not only would it be a bad pun, but none of my local readers would really believe it. The better half's had to listen to me sing "spider pig, spider pig, does whatever a spider pig does" all week long.
UPDATE: The infection spreads to SF! with dividends here! M. C— of The Standing Room is hooked & has found the entire clip--with a line of song that's not from the trailers. I won't spoil it for you (oh, it's good...), but I did switch clips below. Thanks M. C—, hope you're not still singing this and driving OMC nutty over the next week.
Now that I think about, I also enjoy the bit during Pat Nixon's tour in Act 2 of Nixon in China with the "pig pig pig pig pig pig pig pig pig" patter. In the production here Pat scratched a couple of fake pigs on the ear whereupon said fake pigs jittered up and down excitedly--very endearing.