One of my favourites from Red Dwarf:
Hideous mutant vampire polymorph disguised as a beautiful woman: "Hi, 'm the Genetic Mutant"
Cat: "Jenny who?"
From
http://www.sockbaby.com (episode 1)
"Go back to your alien brethren, and tell thedm that Ronnie Cordova says they're
gay!"
(Normally I wouldn't find that funny, but sockbaby is awesome.)