Hey, the man's been traveling a lot: When President Obama signed the guest book at Westminster Abbey today, he wrote that it was a "a great privilege to commemorate our common heritage, and common sacrifice." Then came his name and the date—"24 May 2008." Whoops. "Granted, 2008 was a great year for him, and we might try to live it for as long as possible, too, if we were him," notes the Daily Intel blog. (Although Michelle signed the message, too, so maybe she's the guilty party?) Click to see photos of the first couple's meeting with William and Kate.