“24” (8 p.m., Fox): We’re told that Jack Bauer (Kiefer Sutherland) reaches an

“24” (8 p.m., Fox): We’re told that Jack Bauer (Kiefer Sutherland) reaches an “emotional breaking point” on the season finale of “24.” Maybe he’ll head-butt somebody.

“Gossip Girl” (8 p.m., The CW): As “Gossip Girl” wraps up its season, the mysterious title character sends out a “scandalous” e-mail just in time for graduation. Naturally, Serena goes ballistic.

“The Bachelorette” (9:02 p.m., ABC): On “The Bachelorette,” Jillian Harris will have her pick of hunky men. Let’s just hope she doesn’t pull a Jason Mesnick and turn someone’s heart into a steaming lump of ash.