McGroveling to Letterman

John McCain is taking a page out of the Hollywood TV playbook!

When your ratings are slipping, schedule a stunt to give ’em a jolt!

Well, looks like Senator McCain is doing just that.

He’s scheduled to appear on the David Letterman show on Thursday to likely plead mea culpa for dissing Dave a few weeks ago to ‘save’ the economy for Katie Couric.

Set your DVR’s y’all!

We bet there’ll be lots of funny stuff!

[McCain image via WENN. Letterman image via Getty Images.]