Class is back in session when "Community" returns to NBC at 8 p.m. Thursday. In the episode, Jeff (Joel McHale) must participate in an elaborate "Hunger Games"-style competition devised by Dean Pelton to earn a spot in an overcrowded history class. (Vivian Zink/NBC)

Joel McHale and Yvette Nicole Brown star in "Community," returning at 8 p.m. Thursday on NBC. (Jorin Althaus/NBC)

Daryl (Norman Reedus) finds himself in a precarious situation when "The Walking Dead" returns from its midseason hiatus at 9 p.m. Sunday on AMC. (Tina Rowden/AMC)