If you missed it in theaters, Hot Tub Time Machine is out in pay-per-view, redbox, Netflix, etc.
disclaimer - If you're offended by foul language, crude/dirty jokes, drug humor, "adult subjects" or simple stupidity, this is not be the movie for you.
Personally, I found it hilarious.
Anybody who skied in the 80's and especially those who partied at ski resorts will get a kick out of this flick. The costumes alone are worth the buck redbox rental fee.
pc.