That would be a huge ego combination.
I think Gulliani and McCain Would not be a bad pair either. That would definitely pull some more conservative democrat votes their way. I don't however think the Clinton/Obama combo will persuade any rep. voters.
I did think that was a much better debate, than the past couple. I also got a kick out of Mitt and McCain going at it too. I don't think they will be pairing up any time soon.