Love him or hate him, it seems destined that the FCC’s Julius Genachowski will leave as big of a mark on the agency he’s leading — if not bigger — than his predecessor Kevin Martin did, because he’s hell-bent on shaking up the wireless airwaves and landlines he oversees in some pretty huge ways. Pushback from broadcasters is apparently quite strong , but he’s reiterated at a conference today that he intends to investigate freeing up TV spectrum for to make room additional wide-area wireless services , a move that certainly seems to make sense on the surface considering that universal broadband to the home — which could carry all the TV you’d ever need — is also high on Genachowski’s to-do list.