“Ringer”
Tuesday 9pm, CW
Buffy is back! Well, not really, but Sarah Michelle Gellar returns to TV with this new thriller about identical twin sisters in trouble. Recently sober Bridget goes on the run after witnessing a professional hit job. She turns to her estranged sister Siobhan, a wealthy Manhattanite who has kept her past (and sister) a secret from her husband and friends. After Siobhan disappears, Bridget surreptitiously takes her place, soon discovering that Siobhan’s seemingly perfect life is even more fraught with danger than her own. The concept is high-minded for teen-skewing CW (it was originally developed for CBS), but Gellar is a pro who anchored even the wonkiest episodes of “Buffy the Vampire Slayer.” She’s joined by Nestor Carbonell (“Lost”) and Ioan Gruffudd (Fantastic Four), making this worth a shot.
“Up All Night”
Wednesday 8pm, NBC
Pity poor Will Arnett and Christina Applegate. They are both enormous comic talents who have trouble finding projects worthy of their abilities. They have had their hits (“Arrested Development” and “30 Rock” for him, “Married with Children” and Anchorman for her), but also a string of misses, including “Running Wilde,” “Sit Down Shut Up,” “Jesse,” and “Samantha Who?” They pair up for this sitcom about new parents struggling to balance their personal lives with that squealing, pooping sack of flesh that shares their genes. It’s a paper-thin set-up, but you could say the same about “Cheers,” “Friends,” “Seinfeld,” etc. The pilot was apparently reshot to include more of “SNL” alum Maya Rudolph—red hot after this summer’s Bridesmaids—who plays Applegate’s vapid and demanding talk-show host boss.
“Comedy Central Roast of Charlie Sheen”
Monday 9pm, Comedy Central
Nobody needs a recap of Charlie Sheen’s spectacular implosion earlier this year, right? The self-styled warlock of truth crazied himself out of an extremely lucrative gig on “Two and a Half Men” (which premieres with Sheen’s replacement, Ashton Kutcher, an hour before this special) and then took his porn-star “goddesses” across the nation for a critically savaged stadium tour. Comedy Central is happy to take advantage of walking punchlines, so Sheen is the guest of honor at this year’s roast, again led by “Family Guy” mastermind Seth MacFarlane. Among the celebrities readying their verbal skewers are Jeff Ross, Steve-O, and Mike Tyson. Dude, when Steve-O and Mike Tyson are making fun of your life choices, it is time for some serious soul searching.