Gavin's call still, of course. I will be just as tickled to see BIP 16 move into place, ultimately I just want to see multisig happen but don't care how it gets done, and BIP 16 is more than good enough for me.
I used my Phone-a-Friend and Ask the Audience, and I'm locking in BIP 16 as my Final Answer (follow the link if you don't get the stale pop culture reference).