Associated Press
Mitt Romney

Mitt Romney made a return visit to "Late Night with David Letterman" last night, presenting in his straight-laced style a Top Ten list Top Ten list that included shots at Newt Gingrich, the Indianapolis Colts and, mostly, himself.

Wearing a blazer and no tie, Mitt read lines created for him by "Late Night" writers, and most of them worked. But America may have a tough time believing Mitt really refers to himself as "M-I-double tizzle."