New TV spot calls McCain "Washington's biggest celebrity."
Includes clips of him on "Saturday Night Live," "The View," and Leno and Letterman's shows.
The 30-second ad also shows McCain with Bush together repeatedly, accuses his "low-road campaign" of being influenced by special interests.
Watch it above. Read script here.
The campaign says the ad will begin running on national cable on Tuesday; the size of the media buy is unclear.
