Treehouse of Horror XXI:

"War and Pieces" - when Marge suggests playing board games instead of violent video games, Bart and Milhouse have to escape a lifesize board game

"Tweenlight" - Lisa falls for a new student (voiced by Daniel Radcliffe) who happens to be a vampire

"Master and Cadaver" - in a Dead Calm spoof, Homer and Marge rescue a man at sea (voiced by Hugh Laurie) while on their second honeymoon, but they become convinced that, rather than surviving an attempted poisoning, he's the killer, and Homer and Marge are next on his list