Greek's season finale will leave us wondering about Casey and Cappie, 10 Things I Hate About You is back, Kell on Earth goes to LA and back for its season finale, and Ben Stiller stops by The Daily Show.

8:00 PM

Dancing with the Stars Week number two of performances will go down tonight, which means only one more week until the eliminations begin! (ABC)
Chuck Chuck is allowed to pick any CIA agent as his partner in an undercover assignment, which makes him think of Sarah. Casey, Morgan, and Awesome assemble to help Chuck get Sarah back from Shaw. (NBC)
10 Things I Hate About You Season Premiere. The second season (which is yes, based off the movie of the same name) kicks off with Kat getting suspended. (ABC Family)
Life Unexpected Lux opens up to Ryan about her childhood in foster care when they become trapped at the radio station during a storm. (The CW)
Marathons, Galore! Starting at 8, TBS will run Family Guy, SyFy has V, TruTV's got Operation Repo, and WE has The Golden Girls all night long.

9:00 PM

24 Day 8: 5 - 6 am. President Taylor's idealism is criticized as the threat of an attack undermines her vision for global peace. Enjoy the show now, because Fox just canceled it. (Fox)
Gossip Girl Blair helps out at her mother's latest fashion show, which Rufus volunteers Jenny to help at. (The CW)
Trauma A sniper's on the loose in San Francsisco and Nancy and Glenn are right in the middle of harm's way. (NBC)

10:00 PM

Greek Season Finale. Casey worried about her post-graduation future at Law School while Cappie tries to pull off a romantic surprise for her birthday. But of course, they have a talk about their future and a possible long-distance romance which will undoubtedly be the cliffhanger for the end of the season. (ABC Family)
Castle Part two of two. The conclusion's to last week's two-parter about a serial killer is resolved tonight. (ABC)
Damages Patty's clients want her off the Tobin case and Tom's actions may just cost Ellen her job. (FX)
Kell on Earth Season Finale. Kelly makes her way to Los Angeles to oversee her West Coast office and then returns to NYC for a breast-cancer charity. (Bravo)
Law & Order A global warming symposium becomes a crime scene when a scientist is poisioned and collapses on during his speech. Wait a sec, does the GOP have something to do with this? Bonus: Tony Hale (Buster from Arrested Development guest stars. (NBC)
Nurse Jackie Jackie pisses off Dr. Cooper when she gives false information to a little boy's family, Eddie visits Kevin at the bar, and the death of O'Hara's sends her down an alcoholic spiral. (Showtime)
True Life I Have a Parent in Prison. Two teen boys have fathers in prison and these are their stories. (MTV)
Saving Grace Grace gets closer to her spiritual destiny, Ham dates his late brother's widow, and a fatal dog attack. (TNT)
show
 Meteorite Men The show goes to the Gold Basin of Arizona which houses a field of meteorites. (Discovery)

Who's on the Late Night Couches Tonight?

The Daily Show: Ben Stiller (Comedy Central)
The Colbert Report: Sen. Claire McCaskill (Comedy Central)
Jimmy Kimmel Live: Elizabeth Mitchell, Liam Hemsworth, Kevin Nealon (ABC)
Lopez Tonight: Snoop Dogg, Foreigner (TBS)
Chelsea Lately Ludacris (E!)
The Tonight Show with Jay Leno: Lauren Graham, Karl Rove, Joss Stone (NBC)
Late Night with Jimmy Fallon: Jeff Goldblum, Jennifer Morrison, Julian Casablancas (NBC)
Late Show with David Letterman: Robin Williams, "American Idol" castoff Paige Miles, Usher (CBS)
Late Late Show with Craig Ferguson: Joel McHale, Ben McKenzie (CBS)