You could almost feel sorry for Joe Biden when he crashed his wife Jill’s debut book talk in New York last week. Standing in the shadows at the 92nd Street Y, and with no microphone in sight, the former president looked lost as he rasped at his wife: “ Who do you love most in the whole world? ” Up on stage, resplendent in a pastel skirt-suit in her starring role alongside Whoopi Goldberg, Jill responds: “Whoopi,” laughs and turns on her stiletto heel. Maybe it was a comedy routine the former