Letterman's retirement in a few months actually has me a bit bummed, I've been watching him since the early days on NBC. None of the other talk shows ever really got my attention, it was mostly Letterman's humor and wit in impromptu situations that made it worthwhile.
Then there was the bands. Admittedly, most of the time I would wait for the closing act, give them about 30 seconds to catch my interest, then delete the remainder of the show off the DVR if they weren't cutting it (or at least fast forward to Dave's closing comment), but every now and then the show had some great acts.
Then there were the weird acts, worth watching for the sheer novelty like these:
Future Islands
https://www.youtube.com/watch?v=1Ee4bfu_t3c#t=197
Die Antwoord
https://www.youtube.com/watch?v=JA1LxhugiJI
....So, for any Letterman fans out there who will miss the show, have you decided what you will watch instead after he is gone? I can't watch any of the other talk show hosts out there for very long, they're mostly horrible. Kimmel was great when he was on The Man Show with Adam Corolla, but his talk show just isn't the same. There will never be another Letterman. Last of the mohicans...