Actor J.K. Simmons rose to fame playing Emil Skoda in the Law & Order television franchise. He went on to co-star in several television and film projects, including Oz, The Closer and Rendition. In 2007, Simmons co-starred in the film Juno. He has been a frequent collaborator with Jason Reitman, also appearing in Thank You For Smoking. Simmons also appears in Diablo Cody's Juno follow-up, Jennifer's Body.

• Vern Schillinger in Oz (1997-2003)
• J. Jonah Jameson in Spiderman 3 (2007)
• Martin Smarty in Kim Possible (2007)
• Mac MacGuff in Juno (2007)
• Will Pope in The Closer (2005-2007)

"I was once counseled not to be seen without hair if I wanted to be a leading man. So I had a piece made, and I wore it for a few auditions, but I could never bring myself to wear it in real life. I was never Brad Pitt movie-star handsome. I've always been a character actor waiting to happen."TV.com: J.K. Simmons Profile

"For a 50-year-old bald guy to even be considered as a possibility of a romantic interest is kind of fun and different."TV.com: J.K. Simmons Profile

• Google Blog Search: J.K. Simmons

• Note: The majority of the links in this timeline are to IMDb, which has pop-ups.

• January 9, 1955: Born

• 1994-2004: Law and Order

• 1997: The Jackal

• 1997-2003: Oz

• 1999: The Cider House Rules

• 2000: Autumn in New York

• 2000: The Gift

• 2001: The Mexical

• 2002: Spider-Man

• 2004: The Ladykillers

• 2004: Spider-Man 2

• 2005: Thank You For Smoking

• 2006: The Astronaut Farmer

• 2006: First Snow

• 2005-2007: The Closer

• 2007: Spider-Man 3