Co-starred with Natasha Richardson and Maggie Smith in a small screen remake of "Suddenly Last Summer" (PBS)
Acted in the CBS TV-movie "Thursday's Child"; earned a Golden Globe nomination for Best Supporting Actor in a TV movie
After parents' divorce, moved to L.A. with mother and younger brother Chad
Cast on ABC's "Brothers & Sisters" as a Republican senator, Robert McCallister; left series after the fourth season
Garnered praise for his featured role in Mike Myers' "Wayne's World"
Hosted "Saturday Night Live" (NBC), beginning his association with then-cast member Mike Myers
Made stage debut at the Williamstown Theatre Festival in "Three Sisters"
Played a wealthy prep-school student whose mother (Jacqueline Bisset) carries on an affair with his roommate (Andrew McCarthy) in "Class"
Portrayed a deaf mute in the ABC miniseries version of "Stephen King's The Stand"
Starred in the short-lived CBS drama "Dr. Vegas"; also produced
While in high school, acted in Super 8 movies made by classmates Sean Penn and Charlie Sheen
Featured alongside other twentysomething actors (including Demi Moore, Emilio Estevez and Andrew McCarthy) in "St. Elmo's Fire"
Began acting in TV commercials
Had an uncredited cameo in "Tommy Boy," starring "SNL" cast members David Spade and Chris Farley
Landed breakthrough role as Sodapop in Francis Ford Coppola's "The Outsiders"
Had supporting role in "A View From the Top"
Made disastrous appearance on the 61st Academy Awards telecast performing a duet with an actress playing the part of Snow White
Put his notable impersonation of Robert Wagner to good use with a featured role in Myers' "Austin Powers: The Spy Who Shagged Me"
Re-teamed with Aaron Sorkin to star in the London revival of "A Few Good Men"
Returned to series television for the first time since 1979, playing the President's deputy communications director on the NBC political drama, "The West Wing"; left the series due to monetary disputes; earned Golden Globe (1999, 2000) and Emmy (2001) nominations for Best Actor
Co-starred with Aaron Eckhart in Jason Reitman's satirical comedy "Thank You for Smoking"
Had a villainous turn opposite James Spader in "Bad Influence"
Landed starring roles in "Youngblood" (with "The Outsiders" co-star Patrick Swayze) and "About Last Night" (with "St. Elmo's Fire" co-star Demi Moore)
Joined the NBC comedy "Parks and Recreation" as a state employees brought in to fix Pawnee's budgetary crisis
Made TV series debut on the short-lived ABC sitcom "A New Kind of Family"
Played a NYC detective tempted to corruption in the TNT original movie "Framed"
Played an American attending the famed British university in "Oxford Blues"
Produced the HBO-aired film "Frank and Jesse"; also co-starred as Jesse James
Reprised his role as Sam Seaborn, the senior political official for the final episodes of NBC's "The West Wing"
Starred and executive produced the short-lived NBC drama "The Lyon's Den"
Wrote and directed the short film "Desert's Edge" (aired on the Showtime series "Directed By")
Caught on videotape in a tryst with two women (one underage) at the Democratic National Convention in Atlanta
Earned critical praise for his performance as a mentally-challenged youth in "Square Dance"
Featured opposite Jodie Foster and Nastassja Kinski in the film adaptation of John Irving's "The Hotel New Hampshire"
Made Broadway debut in "A Little Hotel on the Side"
Played the title role in the ABC Afterschool special "Schoolboy Father"
Portrayed a conservative Christian leader in "Contact"
Starred in the thriller "Masquerade" opposite Meg Tilly
Co-starred in Mark Pellington's "I Melt with You"
Played a recurring character on Showtime's "Californication"
Joined the cast of the sitcom "The Grinder"
Voiced the role of Simba on the animated series "The Lion Guard"