23/6 the Huffington Post off-shoot that of late has been giving the Onion a run for its money, hosted a comedy hour upstairs at the Big Tent following Hillary Clinton's keynote address last night. Featured performers included Portfolio's Matt Cooper (who does a mean John McCain impression), the Barely Political folk, the tooth-hurtingly funny Fred Armisen, and FBNY's current roommate and bringer of good things, HuffPo's Rachel Sklar, whose rendition of American Pie is featured below.