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.

— Where do you go after you’ve interviewed Smaug? Say goodbye to The Colbert Report Thursday at 11:30 p.m. Eastern on Comedy Central. He may be leaving the conservative character behind, but the charismatic Colbert will take over for Letterman in 2015, sans schtick.

Goodbye, White Collar; hello, Real World, AFTER THE JUMP …

— Season 30 (yes, 30) of The Real World premieres Tuesday at 10 p.m. Eastern on MTV, in case you forgot what happens when people stop being polite and start being drunken idiots. This season's twist — Skeletons — surprises the housemates with unwanted visitors from back home.

— It was a smart move to reimagine NBC’s The Sing-Off as a one-night competition during the holiday season. It’s about the only time of the year when our collective sentimentality allows for a momentary boost in our a cappella tolerance. (Plus, I’m sure it’s hard to tear host Nick Lachey away from his super busy schedule.) Get ready to see folks use their mouths in the most interesting ways they can show on broadcast television, Wednesday at 9 p.m. Eastern.

— Get ready to bid farewell to the Freak Show as American Horror Story airs its winter finale Wednesday at 10 p.m. on FX. Will Jimmy (Evan Peters) fare better than Meep in prison? What’s got Pepper (Naomi Grossman) so upset? And, most importantly, will we see Dandy (Finn Wittrock)’s butt again?