Louie 10 p.m., FX
The season ends tonight with Louie feeling miserable on New Year’s Eve. I’ve enjoyed this string of episodes a lot, particularly the first few featuring strong female guests, including Melissa Leo and Parker Posey. Since then, the show has been uneven, with two many non sequitur sequences. And I’m not sure the “Rocky” goof, in which Louie was trying out for David Letterman’s spot, merited three episodes. Still, it contained a killer performance by David Lynch as a CBS executive. Louis C.K. (above) sure has a way of coaxing greatness out of his guests.
Up All Night 8:30 p.m., Channel 7
This show is such a mess. And that’s a shame, given all the potential. Last week in the season two premiere, show creator Emily Spivey and the writers awkwardly revamped the concept. Now Christina Applegate’s Reagan (left) works at home and takes care of the baby, Will Arnett’s Chris is in the construction business with her brother, and Maya Rudolph’s Ava (center) is out of work. Let’s see if that setup works better. I’m not optimistic. Right: Sean Hayes as Walter.
Grey’s Anatomy 9 p.m., Channel 5
Fallout from the [fill in bombastic cliffhanger here].
The Colbert Report 11:30 p.m., Comedy Central
Vince Gilligan’s Island. I don’t want to go to there.
The Big Bang Theory 8 p.m., Channel 4
It’s a bird, it’s a plane, it’s Wolowitz.Matthew Gilbert can be reached at email@example.com. Follow him on Twitter @MatthewGilbert.