Nude Celebs: Janet Jackson - Late night talk show hosted by former TV weatherman David Letterman. A lot of hip people prefer Letterman's slightly edgier fare over the mainstream Jay Leno, who kills him in the ratings every night, but honestly, Dave hasn't been edgy since about 1993. I used to tape him in high school, but now if I watch one of their shows at all it's usually about the guest, not the host.