David Letterman : The Jerry Seinfeld viewers see on air is who he really is . Shaffer 's new memoir has stories of ` Letterman , '' Letterman . Shaffer was offered chance to play Paul Shaffer sidekick at two point . Bandleader legendary for his `` Celebrity Seders ''
Paul Shaffer : The David Letterman viewers see on air is who he really is . Shaffer 's new memoir has stories of `` Saturday Night Live , '' Letterman . Shaffer was offered chance to play Jerry Seinfeld sidekick at one point . Bandleader legendary for his `` Celebrity Seders ''