Jonathan Kimble "J. K." Simmons (born January 9, 1955) is an American actor. He is best known for his roles on television as Dr. Emil Skoda in multiple programs in NBC's Law & Order franchise, Assistant Police Chief Will Pope in TNT's The Closer, and neo-Nazi Vernon Schillinger in the HBO prison drama Oz. In film, he is best known as J. Jonah Jameson in the Spider-Man franchise and as Mac MacGuff in Juno. In video games, he is most known for his work as Aperture Science's eccentric founder and CEO, Cave Johnson, in Valve Software's critically acclaimed physics game Portal 2.
J.K. Simmons has appeared in diverse projects spanning motion pictures, television and on and off Broadway. He played J. Jonah Jameson in Sam Raimi's Spider-Man trilogy. His motion picture credits include Hidalgo, The Ladykillers, The Mexican, Off the Map, For Love of the Game, The Gift, Thank You for Smoking, Rendition, Burn After Reading, and Juno.
Simmons' latest films include The Music Never Stopped, Jennifer's Body, Extract, The Vicious Kind, I Love You Man, Beginner's Guide to Endings, and the Academy Award-nominated film Up in the Air. Most recently, Simmons appeared in the Universal Pictures film Contraband. Simmons will star next in Geezers and The Word.
On the small screen, Simmons credits include The Closer, and Law and Order. Simmons has appeared on the Broadway stage in Guys and Dolls, Laughter on the 23rd Floor, A Change in the Heir, Peter Pan, and A Few Good Men.