The TVLine-Up: TV Worth Watching This Sunday

On TV this Sunday: We’re back to that “wayyy too much” stage, including a Simpsons milestone, the start of a new Race, the Downton Abbey season finale, Pan Am‘s final flight and more. Somehow, we boiled it all down to these 11 picks.

8 pm The Simpsons (Fox) | In the show’s 500th episode, the Simpsons are evicted from Springfield and join an off-the-grid community outside of town. D’oh!

8 pm The Amazing Race (CBS) | Season 20 premiere: The 11 teams — including a pair of married professional clowns — find themselves skydiving from a plane at 10,000 feet. (Check out the full cast.)

8 pm Once Upon a Time (ABC) | David finally agrees to tell Kathryn about his relationship with Mary Margaret, as runaway groom Prince Charming searches for Snow White. (View photos here.)

Spoiler Alert! Video: Michael Urie and Yvette Nicole Brown Do a Scene from Downton Abbey‘s Finale

9 pm Downton Abbey (PBS) | Season finale: Neither the Granthams nor the servants can enjoy the Christmas season’s merriment when they are forced to turn against one of their own; Thomas and O’Brien are up to old tricks; Daisy tries to make sense of her future as Anna holds tight to endure the present; Richard’s brutish behavior forces Mary to choose between two kinds of ruin.

9 pm The Good Wife (CBS) | You almost don’t need to know about the big case (though it’s a damn good one) — just be advised that Jonathan Groff (Glee), Denis O’Hare, Rita Wilson, Amy Sedaris and Parker Posey all guest-star tonight.

9 pm The Walking Dead (AMC) | Rick, Hershel and Glenn fight to survive against new foes (both dead and alive); Shane, after finding Lori in danger on the road, makes it his mission to bring her back to the farm.

9 pm Shameless (Showtime) | Jasmine invites Fiona on David’s boat for one last summer blowout — neglecting to mention that she also invited Steve and Estefania; Karen snaps and kicks Jody out; Lip and Ian come to blows.

2012 Renewal Scorecard: What’s Coming Back? What’s Getting Axed? What’s on the Bubble?

10 pm Eastbound & Down (HBO) | Season 3 premiere: Kenny enjoys a new lease on his baseball career as the closer for the minor-league Myrtle Beach Mermen.

10 pm House of Lies (Showtime) | With Marty accepting a monogamy challenge from April, Jeannie is put in the position (so to speak) of having to “satisfy” a female client.

10 pm Pan Am (ABC) | Season finale: As 1964 arrives, Ted becomes increasingly nervous about his wedding plans; Kate wrestles with suspicions about those around her; Laura receives a startling offer; Maggie is placed is a perilous position.

10:30 pm Life’s Too Short (HBO) | Premiere: A faux documentary series starring diminutive actor Warwick Davis as a conniving fictionalized version of himself. Ricky Gervais and Stephen Merchant costar.

Which of the above is must-see for you? Also, hit Comments to offer your own tune-in suggestions.