Two-time Emmy winner James Woods and recent Tony recipient Sara Ramirez will be bringing their award-winning chops to television's two most popular medical dramas in the coming months.

Woods will be guest-starring on an episode of NBC's "ER" in February, marking his first work on a live-action series in a number of years (he's done voice work on several shows, most recently "Family Guy"). He'll play Dr. Nate Lennox, a former professor of Abby's (Maura Tierney) who now suffers from ALS and becomes a patient at County General.

Woods is a five-time Emmy nominee, most recently in 2003 for playing New York Mayor Rudy Giuliani in a USA Network biopic. His wins came in 1986, for the CBS movie "Promise," and '89, for ABC's film "My Name Is Bill W." He's also a two-time Oscar nominee, for "Salvador and "Ghosts of Mississippi."

Ramirez, meanwhile, will follow up her Broadway run as the Lady of the Lake in "Spamalot" with a multi-episode arc on ABC's "Grey's Anatomy." She'll appear in seven episodes of the second-year hit, playing a surgeon. Other details, including the date of her first appearance, are scant at the moment.

She won a Tony Award earlier this year for her performance in "Spamalot," the musical based on "Monty Python and the Holy Grail." Her TV credits include guest spots on "Law & Order: SVU," "Spin City" and "NYPD Blue."