On Saturday night over dinner some ideas came together that suggested an interesting event possibility: Host a Murder speed dating. It would be like any other of those Host a Murder parties, but the setting is a speed dating night, so everyone only gets a couple of minutes to talk to the other guests each round. I think it would work rather well. You could even have instructions that cause an obvious and important disturbance to the usual rhythm, like one pair standing up to yell at each other.
Mokalus of Borg
PS - The specifics are still only half-baked.
PPS - Maybe one day I'll write something like this.