“Friday Night Lights” (9 p.m., NBC): The acclaimed drama is back for a third season

“Friday Night Lights” (9 p.m., NBC): The acclaimed drama is back for a third season — and with change in the offing for two beloved characters.

“Battlestar Galactica” (10 p.m., Sci Fi): You’d have to be a frakin’ toaster to not be stoked for the final 10 episodes of “Battlestar Galactica,” which begin tonight. Picking up from last June’s cliffhanger, our space-traveling pals finally reach Earth, but discover it’s not the paradise they thought it was.