Check out our weekly guide to make sure you're catching the big premieres, crucial episodes and the stuff you won't admit you watch when no one's looking.

— The cast of Downton Abbey lets down their hair with host Andy Cohen on Watch What Happens Live Tuesday at 11 p.m. Eastern on Bravo. So if you ever wanted to see what it'd be like for Thomas Barrow (Rob James Collier), Tom Branson (Allen Leech), Lady Edith (Laura Carmichael) and Mrs. Patmore (Lesley Nicol) to throw back one too many flirtinis, this is your chance. Sadly, the Dowager Countess (Maggie Smith) won't be there to lodge her disapproval.

More picks and clips, including a Horror Story mid-season finale to lose your head over and a celebration of Sondheim AFTER THE JUMP…

— James Lapine's new documentary Six By Sondheim honors legendary Broadway composer Stephen Sondheim with appearances from Audra McDonald, Darren Criss, America Ferrera and others. Watch it tonight at 9 p.m. Eastern on HBO.

— Have you had enough holly jolly holiday nonsense yet? No? Well, you're in luck. American Idol-alum Kelly Clarkson shares songs and a Scrooge-inspired story about a yuletide diva in Kelly Clarkson's Cautionary Christmas Music Tale Wednesday at 10 p.m. Eastern on NBC. Guest stars include Reba, Blake Shelton, Whoopi Goldberg, Heidi Klum and Queer Eye For the Straight Guy's Jai Rodriguez.

— American Horror Story: Coven rockets into its mid-season finale with an episode focused on the severed head of Madame LaLaurie titled simply "Head." What will happen as Fiona (Jessica Lange) approaches Marie Laveau (Angela Bassett) for a truce? Find out Wednesday at 10 p.m. on FX.