#10: David Letterman declared that 60% of everything that Bill O'Reilly says is crap.
#9: "Will It Float?"...would any of those babes float?
#8: His musical guests have included Ringo Starr and The Temptations.
#7: Nodody gets away clean on his show.
#6: As a Bush supporter, he rips at Bush as much as possible.
#5: Paul Shaffer and The CBS Orchestra always have some great music in store.
#4: David Letterman once hosted the Oscars.
#3: I haven't seen any of the episodes where other people host (how can you fill in for Dave?).
#2: The jokes work, no matter which era we live in.
And the #1 reason that I like the "Late Show with David Letterman": The top ten list.