NEW YORK -- Senator Barack Obama made some campaign promises you can be pretty sure he won't keep.
The Democratic presidential hopeful appeared on the "Late Show With David Letterman," delivering a tongue-in-cheek list of his top 10 campaign promises, including a pledge to rename the tenth month of the year "Barack-tober."
Also on the list is a vow to "appoint Mitt Romney secretary of lookin' good" and another to "put Regis on the nickel."
And the No. 1 campaign promise?
"Three words: Vice President Oprah."
Obama is the latest in a string of candidates to be on the show. Earlier this week, rival John Edwards came on the show only to have his hair messed up by the host. Obama joked that Lettermen couldn't repeat that prank, telling him: "you can't muss my hair."