Remember how NYC radio guy Chris Russo (and part-time conductor?) got all handsy on Letterman the other night? (Funny critique here.) We didn’t hear the intro, but a tipster mentioned that Letterman made a couple of sly remarks about Russo’s on-air partner, Mike Francesa (he’s the radio equivalent of Lupica), and his reaction – or lack thereof – on Wednesday’s show was priceless. Naturally, there’s video. You be the judge.