TVLine Items: Sons Stars Rev Up Alcatraz, SVU Gigs, Obama Drops By Tonight Show and More!

How’s this for Juice-y scoop: Sons of Anarchy‘s Theo Rossi has booked a guest spot on Fox’s freshman thriller, Alcatraz. Per EW.com, the actor will appear in Episode 10 as an über-violent businessman who was imprisoned at The Rock some 50 years ago.

Tommy Flanagan (who plays Chibs on the FX drama) has also landed a winter gig, joining The Wire’s Isiah Whitlock on a home invasion-themed installment of Law & Order: SVU, TVDoneWright.com reports.

Ready for more of today’s TV dish? Well…

• Michelle Obama will make her first late-night TV appearance as FLOTUS on The Tonight Show‘s Jan. 31 ep.

• The Book of Mormon‘s Andrew Rannells has signed a talent holding deal with 20th Century Fox TV, with the intention for the Broadway vet to star in a blended family comedy pilot from Glee boss Ryan Murphy and scribe Ali Adler, per Deadline.

• NBC is rounding out the cast of its untitled Sarah Silverman comedy, Deadline reports, adding former Sarah Silverman Program writer Harris Wittels, who will play a fictionalized version of himself, and all around funny lady June Diane Raphael (Happy Endings).

• Andrea Parker (Desperate Housewives), Jud Tylor (That ’70s Show), Megalyn Echikunwoke (90210), Madisen Beaty (Miss Behave) and Cody Christian (Pretty Little Liars) have joined the cast of NBC’s futuristic drama pilot Beautiful People, per Deadline, playing an array of humans and their android counterparts.

• TLC has picked up Undercover Princes and Undercover Princesses, a pair of new reality series in which real-life royals disguise themselves as wee commoners to find love. Princes is slated to premiere Tuesday, Jan. 31, while Princesses debuts Tuesday, Feb. 28.

Which TVLine Items have you talking today?