In STARMAN #27, James Robinson and Steve Yeowell have pretty much the entire supporting cast waiting for Jack Knight, the then-current Starman, for a Christmas party. However, he's held up because he just runs into Santa Claus.
Okay, not actually Santa Claus, but one of those department store Santas, whose locket, which contains the only picture of his deceased family, has been stolen. Jack of course helps him to get it back, at which point they go their separate ways.
At the end of the day, though, Jack decides he simply can't let Santa Claus spend Christmas on his own.
A truly touching story, even if hampered by the art.
Five more days till Christmas!