Comment This does sound like a good plan (Score 1) 5
Anybody else ever play You Don't Know Jack with three other people? I think that was the first really clean and comprehensible party quiz game, and a YDKJ title seems like it would be a good fit here.
Pretty much any cellphone can now do a decent imitation of a Wiimote (besides the sensors, you could also use camera data) and it would also be hilarious to see people accidentally chuck their phones across the room while bowling.