Alec Baldwin clearly can’t get enough of himself. Spies at the Equinox gym on the Upper West Side say that when the hefty star hops on the cardio machines, he flips the TV channel to his favorite show — the one he stars in. “[He] jumped onto the elliptical trainer — that is, of course, after he changed the TV to reruns of ’30 Rock’!” a witness told Us Weekly. A rep for Baldwin said, “If this even happened, he was ‘exercising’ his right to great comedy during his workout.”