Alec Baldwin is in final negotiations to star opposite Tina Fey in Fey's untitled comedy pilot for NBC.

In other pilot casting news, Bruce McGill has been cast in ABC's drama "Enemies," Sean Bean has been tapped as the lead in Fox's drama "Faceless," Eric Mabius is set to star opposite America Ferrera in ABC's drama "Ugly Betty," Jaime King will play the female lead in Fox's comedy "The Worst Week of My Life" -- with Charles Malik Whitfield also cast in the project -- and Julie Hagerty has come on board Fox's comedy "Becoming Glen."

Additionally, Milo Ventimiglia ("Gilmore Girls") has been tapped to co-star in the NBC/NBC Uni TV drama "Heroes," Jennifer Westfeldt ("Kissing Jessica Stein") has joined the ABC/Warner Bros. TV comedy "Notes From the Underbelly," Michael Trucco has been added to the ABC/Touchstone comedy pilot "Him and Us," Charlie Finn ("The Dukes of Hazzard") and Darlene Hunt ("The Darwin Awards") have been cast in the ABC/Regency TV comedy pilot "Help Me Help You," and Dorian Missick ("Freedomland") has come on board the ABC/Touchstone drama pilot "Six Degrees."

The untitled Tina Fey project, from NBC Universal TV and Lorne Michaels' Broadway Video, is set behind the scenes at a "Saturday Night Live"-type show.

The setting is a familiar territory for Baldwin, who has become a fixture on Michaels' "SNL," on which Fey stars and is a head writer.

He has hosted the late-night sketch comedy show a number of times, most recently in December, and also made an appearance this month.

If the Tina Fey pilot goes to series, it will be Baldwin's first major series gig since CBS' primetime soap "Knots Landing."

Baldwin, who also had a recurring role on NBC's "Will & Grace," will next be seen in two high-profile features: Martin Scorsese's "The Departed" and Robert De Niro's "The Good Shepherd."

He is repped by CAA.

"Enemies," from Touchstone TV, focuses on the battle between two former childhood best friends who become sworn enemies -- one becoming a cop, the other a mobster.

McGill will play a Chicago crime boss.

The actor, most recently seen in "Cinderella Man" and "Elizabethtown," is repped by Stone Manners Agency.

"Faceless," from 20th Century Fox TV and Management 360, centers on a federal prosecutor (Bean) who goes undercover as a criminal in order to take down a sprawling underworld organization.

"The Lord of the Rings" co-star Bean is repped by CAA and ICM London.

"Betty," from Touchstone TV, Reveille and Ventanarosa Prods., centers on Betty (Ferrera), an unattractive but efficient secretary at a fashion magazine.

Mabius plays the handsome son of the publisher who has been given the editor-in-chief job at the magazine despite his lack of qualifications.

Also cast in "Betty" is Ana Ortiz (NBC's "A.U.S.A.").

Mabius, who most recently recurred on Fox's "The O.C." and co-starred on ABC's "Eyes," is repped by Innovative Artists, manager Geordie Frey and attorney Karl Austen.

Based on the 2004 BBC limited series, "Worst Week," from Regency TV and Hat Trick Prods., chronicles a young engaged couple's hellacious week leading up to their wedding.

King, who co-starred on Fox's "Kitchen Confidential," will play the bride-to-be.

Whitfield (CBS' "The Guardian") will play the groom's best friend. He is repped by Stone Manners.

"Becoming Glen," from 20th TV, centers on a successful fortysomething man who looks back at 1994, when he was a 32-year-old slacker (Rob Corddry) living with his parents and spending all his time lying on the couch watching TV.

Hagerty, most recently seen in "Just Friends," will play the guy's mom.