when letterman completes his run he s going to be the longest serving host in late night history. at 19 he was making $150 as a weatherman and booth announcer. his stand-up comedy landed his own show in nbc working in the shadow of carson. carson s throne went on to dave leno. letterman carved out the own nish. sometimes there were the top-ten lists. number nine, what s up gangsters? it s the mi double tizzle. number five, diffused stare. number three, look at this, no number three stolen by o.j. and the number one sign barack obama is over confident been cruising for chicks with john