On May 20, 2015, David Letterman is signing off the Late Night airwaves.

Between his 11 year stint at NBC hosting Late Night and his current gig leading The Late Show at CBS, Letterman has graced us nighthawks with 33 years of late evening entertainment. The pop culture landscape was graced with Stupid Pet Tricks, fast food drive thru hijinks, Top Ten Lists, Velcro suits, and all sorts of things thrown off the tops of buildings (from TVs and bowling balls to full paint cans and a zillion bouncy balls).

But all good things come to an end.

To celebrate and commemorate Letterman's long tenure of late night greatness, here's an interview he did with none other than Max Headroom.  Yes, Max Headroom.