Thursday television

"American Idol" 8 p.m. Fox — Fantasia and Clay Aiken from "Idol's" early glory days are set to perform.

"Community" 8 p.m. NBC — Anni invites Professor Cornwallis to Jeff's holiday party.

"Anger Management" 9 p.m. FX — Charlie upsets his neighbors by meeting his clients at home.

"Glee" 9 p.m. Fox — The glee club preps for regionals.

"Parks & Recreation" 9 p.m. NBC — Leslie fights to get rid of outdated rules.

"Project Runway" 9 p.m. Lifetime — Stanley has the most wins among the finalists.

"Men at Work" 10 p.m. TBS — The guys try to impress the new editor.

"Hannibal" 10:01 p.m. NBC — Will and Jack scramble to stop a murderer who harvests victims' organs.