Craig Ferguson hosts The Late Late Show in 2011. Sonja Flemming/AP hide caption
David Letterman David Letterman
Stephen Colbert: He's moving on up, from basic cable to the big time. Theo Wargo/Getty Images hide caption
David Letterman attends "Howard Stern's Birthday Bash" presented in January. Larry Busacca/Getty hide caption
Louisville basketball player Kevin Ware talking with reporters Wednesday, as coach Rick Pitino looked on. Timothy D. Easley/AP hide caption
In this image taken from video and provided by Worldwide Pants, Inc., Republican presidential candidate Rick Perry presents the "Top Ten Rick Perry Excuses," on the set of the Late Show with David Letterman. AP hide caption