Ben and Kate 8:30 p.m., Channel 25
I have a minor crush on this show. It’s a small sitcom about nothing much except a bunch of people acting goofy. It’s like a comic version of the movie “You Can Count on Me,” as Kate deals with her erratic brother Ben. The supporting cast is very appealing, particularly Lucy Punch as BJ. Her timing is off just enough to be funny. Pictured: Dakota Johnson and Nat Faxon.
Emily Owens, M.D. 9 p.m., Channel 56
Mamie Gummer hasn’t had much luck with her first two starring TV roles. Both this show and “Off the Map” were canceled (although the CW is airing all 13 episodes of “Emily Owens, M.D.”). Gummer is an appealing actress, but these shows don’t even hint at the kind of range she showed in her recurring role on “The Good Wife.” I hope she finds better material next time around.
Dixie Mafia 10 p.m., Discovery Channel
I reckon you oughta forget about it.
Doomsday Preppers 9 p.m., National Geographic
Note to self: Remember to pack zombie-killing weaponry.
Late Show With David Letterman 11:35 p.m., Channel 4
Matt Damon. Dave won’t run out of time.Matthew Gilbert can be reached at firstname.lastname@example.org. Follow him on Twitter @MatthewGilbert.