http://www.deadline.com/2014/04/david-letterman-retiring-2015-late-show-with-david-letterman/ I was going to post this in the recent late night talk show thread, but because he was such a pioneer, I thought Dave deserved his own thread. The guy reinvented late night talk show form. He brought a skewed, bizarre kind of irreverence and wackiness that neither Johnny, Merv, Joey Bishop, or any of the other old time late nighters could bring to the table. I mean, whoever would have thought that having people on the show and having their dogs do tricks would catch on? Stupid Pet Tricks, child bird callers, children introducing ridiculous, in bad taste, dangerous xmas gitfs, were the norm on his show. Dave even made walking the halls of NBC a staple. I'll never forget him interrupting a Bryant Gumbel interview outside 30 Rock by yelling with a bullhorn out the window that he wasn't wearing pants. Even though the new NBC lineup, Kimmel, Colbert, all rushed him to retirement, Dave was a true original and no programmer or exec can ever take that away from him.