Various lefty blogs are having fun with a 2000 quote from Senator McCain in which he speculates that he might be too old to run for president in 2008:

Well, in 2004, I expect to be campaigning for the reelection of President George W. Bush, and by 2008, I think I might be ready to go down to the old soldiers home and await the cavalry charge there.

Apparently McCain isn't quite ready to retire. But since we're on the subject, it's worth noting that in 2004, after Obama was first elected to the Senate, he flatly rejected a bid for the White House in 2008:

Calling it as "a silly question," Sen.-elect Barack Obama (D-IL) pledged "he would resist any overtures to run for president or vice president before the end of his six-year term as a U.S. senator," the Chicago Sun-Times reports. "I was elected yesterday. I have never set foot in the U.S. Senate. I've never worked in Washington. And the notion that somehow I'm immediately going to start running for higher office just doesn't make sense."

Obama '08, Because It Just Doesn't Make Sense!