Mitt Romney delivered the Top 10 on CBS's "Late Show" Tuesday night. The theme: things you may not know about the former Massachusetts governor.

Among the memorable lines: "I have absolutely no idea where my birth certificate is" and "I'm the guy in the photo that comes in your picture frame.''

Host David Letterman plugged Romney's book, No Apology, during the brief appearance. The potential White House contender has often used his appearances on late-night TV to poke fun at his no-nonsense image. During an appearance on "The Tonight Show with Jay Leno" in December, Romney joked that it's a sure sign he's running in 2012 "if you ever see me sign up for a gig on Fox News."

— Updated at 9:06 a.m.