Wes Clark rocks! He gives due respect to McCain's service, but "talks truth to the spin". McCain is not a proven leader in foreign policy and military strategy. "Bomb, Bomb, Bomb Iran" are lyrics... it is not a military strategy for the Middle East.
I have followed Gen Clark since 2003. I was on his short-lived bandwagon. Bought the bumper stickers, and T-shirt! Thought he was the right guy for dealing with the post-9/11 world. I wasn't too happy when he choose HRC's campaign, but it looks to me like he's already re-positioned for some role in the Obama campaign. His book, "Winning Modern Wars - Iraq, Terrorism, and the American Empire"  , is a great mil-strat read. For a military history wonk like me, it's a good critique of Gulf War II.
Possible VP? What a contrast he'd be to the last 8 years of Darth Cheney, who was always hiding somewhere, in an undisclosed location!
UPDATE 7/2/08 -- Republicans are irate, Obama moderates and Wes & his supporters stand their ground.