NGTV Guide: Thursday, December 8

Community – NBC 8/7c
“Regional Holiday Music” – When the Greendale Glee Club is unexpectedly sidelined, the school’s effervescent choir director Cory Radison (Taran Killam, “Saturday Night Live”) sets about recruiting the study group members to fill in. Skeptical at first, they eventually fall under his hypnotic spell – one-by-one – singing and dancing their way to the annual Christmas Pageant.

Parks & Recreation – NBC  8:30/7:30c
“Citizen Knope” – Unable to get work done from inside the Parks Department, Leslie forms a citizen action group and fights from the outside. Meanwhile, everyone in the office brainstorms ideas for what to get Leslie for Christmas.

Bones – FOX 9/8c
“The Twist in the Twister” – The team discovers the remains of a so-called “storm chaser” who seems to have died while following a tornado. But footage recorded during the storm ultimately leads them to believe he was murdered. Meanwhile, Booth becomes increasingly overprotective of Brennan both at home and in the field, and sleep-deprived Angela and Hodgins come to terms with having Angela’s father and rock musician (guest star Billy F. Gibbons) babysit their infant son.

Person of Interest – CBS 9/8c
“Get Carter” – Reese and Finch’s game of cat and mouse with Detective Carter becomes infinitely more complicated when The Machine declares that she is their newest POI.

The Mentalist – CBS 10/9c
“The Redshirt” – Jane and the CBI investigate when a retired NFL star quarterback is presumed dead after his car blows up. Meanwhile, while preparing for a court case, Rigsby and Harrigan take their relationship to the next level.

Grimm – NBC 10/9c
“Danse Macabre” – Nick and Hank’s investigation of a dead high school teacher leads them to the school’s outcast, Roddy. Nick realizes that there’s more to Roddy than meets the eye, and enlists Monroe’s help to get through to the troubled teenager before he exacts revenge on the students who wronged him. Meanwhile, Nick learns that his presence is beginning to affect the creature world.