I'm not one to mark many anniversaries, but damn was I surprised to see that it's been that long since Glover (best known as McFly from the Back To The Future movie) sported a wig, striped pants, and some platform shoes that came fairly close to nailing the ever-smug Letterman in the forehead.
I saw this live, we used to watch Late Night all of the time because our jobs all started in the late afternoon back then, the hooting and hollering, fueled in part by some 40 ouncers, that this memorable interview created still makes me laugh.