“Community” (8 p.m., NBC): The Greendale gang goes back to the Dungeons and Dragons well

“Community” (8 p.m., NBC): The Greendale gang goes back to the Dungeons and Dragons well (expertly mined in Season 2), this time with Professor Hickey and his son, played by David Cross. There’s no “Big Bang Theory” tonight, so give it a watch.

TV LISTINGS, B6