The whole female-from-Arkansas thing is going to eliminate her, she'd be the ultimate snub to Clinton. She does have a nice last name to go with Obama's, Obama's team loves that sort of stuff.
What does Rob Wyden bring to the ticket besides being a West Cost, pro-gay marriage, anti-death penalty, Jewish, safe-state liberal?
Wayden comes across as quite a moderate if you look at his record, and he coud help in Nevada, New Mexico, and Colorado.
I've seen Wyden in action, and while he's a think in the Daniel Patrick Moynihan mold (look at his health care and tax plans) he's also quite a poor public speaker. His brand of Portland liberalism won't really help Obama outside of Boulder or Denver in Colorado.
Overall, that seems like a solid list. I'd guess that at least four of those names (Pawlenty, Romney, Sanford, Huntsman) for McCain are on his short list.