Never mind the big, bushy beard – whenever David Letterman walks onto a stage and starts talking to an audience, he's still David Letterman. In the opening minutes of his new monthly Netflix series My Next Guest Needs No Introduction, the veteran talk show host warms up the crowd in a cavernous theater at City College of New York; though he doesn't do a monologue per se, he does "do Dave." The man's still a little grumpy, a little goofy. For anyone who grew up watching him on NBC's Late Night and CBS's The Late Show, it's hard not to feel a surge of warm nostalgia, just seeing him on TV again.
And that's before he brings out President Barack Obama.h2">