Not at all a car crash, not even quite a fender bender, Seinfeld's jaunt with Silverman is, to use his term, “a non-event.” On the other hand, Seinfeld's drive with David Letterman is a winning trip: It has the sweetly … Whether or not the squeamishness is legit, Letterman easily rises to the challenge of producing a quality, occasionally deep, always funny chat with Seinfeld. It's a fly-on-the-wall treat for fans to hear these two modern comedy legends talk shop, and with such