Tomorrow the guys from Mystery Science Theater 3k are doing a live broadcast of rifftrax, which is basically the same thing as MST3K.http://www.fathomevents.com/originals/event/rifftrax_giantkiller.aspx
I've seen several of these and they've all been great. They usually have some shorts in addition to the main flick.
edit: fuck! it's tonight. son of a bitch