Justice League - Season 2 Episode 23 -

In this one-part episode, the Justice Leaguers go their separate ways to celebrate the holiday season. After saving a distant planet, the League returns in time for Christmas. Clark and J'onn visit Smallville for a Kent family Christmas, Green Lantern and Hawkgirl have a snowball fight and visit an alien bar while comparing holiday traditions, and the Flash and Ultra-Humanite have a season's fight and are forced to ally together to save orphans' toys.