“It’s a Wonderful Life” (8 p.m., NBC): Rumor has it that every time you watch

“It’s a Wonderful Life” (8 p.m., NBC): Rumor has it that every time you watch “It’s a Wonderful Life” an angel earns his wings. The Frank Capra classic, still packing plenty of emotional oomph, returns for its annual Christmas Eve airing.

“A Christmas Story” (8 p.m., TBS): It’s the cult classic that celebrates Red Ryder BB guns and sexy leg lamps. “A Christmas Story” is back once again, airing non-stop for 24 hours. We double-dog dare you to watch every hour.