- In 1991, while still in high school, wrote the play The Martha War for which he won the Very Special Arts Young Playwrights Award and had his play performed at the John F. Kennedy Center for Performing Arts in Washington D.C.
- Appeared in Impossible Marriage, a Beth Henley play, on Broadway in 1998 which eventually led him to be cast in Minority Report after Steven Spielberg saw him perform.
- First major role was as Robin Williams's sidekick, Truman Schiff, in the 1998 film, Patch Adams.
- Appeared in a second Beth Henley play on Broadway in 2006 called Ridiculous Fraud.
- Reprised his Minority Report role in the 2015 TV show of the same name; he's the only series regular to do so.
- Tessa Dear London — Daughter
- Elaine London — Mother
- Sara London — Sister
- Megan Reilly — Wife
- Sylvia London — Daughter
- Alan London — Father
- Oberlin College, Oberlin, Ohio, United States, (BA in English, 1995)