Celebrity first pitches Actor Bill Murray throws out the first pitch during Chicago Cub season-opening MLB baseball game in Chicago, Illin...

Celebrity first pitches

Actor Bill Murray throws out the first pitch during Chicago Cub season-opening MLB baseball game in Chicago, Illinois, April 5, 2012. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT BASEBALL ENTERTAINMENT)

Singer Mariah Carey throws the first ball before the start of Japan's professional baseball game between Yomiuri Giants and Rakuten Eagles in Tokyo May 28, 2008. REUTERS/Kim Kyung-Hoon (JAPAN)

Kim Kardashian,left, Kourtney Kardashian , Khloe Kardashian and Kris Jenner,right, throw out the ceremonial first pitch prior to the Los Angeles Dodgers' baseball game against the Washington Nationals in Los Angeles, Wednesday, May 6, 2009. (AP Photo/Lori Shepler)

President Barack Obama throws the first pitch before the 2009 MLB All-Star Game at Busch Stadium on July 14, 2009 in St Louis, Missouri. (Photo by Jamie Squire/Getty Images)

Supermodel Gisele Bundchen of Brazil gestures before throwing the ceremonial first pitch prior to the game between the Oakland Athletics and the Boston Red Sox at Fenway Park in Boston Tuesday, May 25, 2004. (AP Photo/Elise Amendola)

Eva Longoria throws out the first pitch at the New York Yankees Los Angeles Angels game in Anaheim Calif., on Sunday, July 24, 2005. Longoria is an actress who currently stars in the television show "Desperate Housewives". (AP Photo/Chris Carlson)

U.S. actor Tom Hanks, wearing a baseball cap of the Yomiuri Giants, throws the first pitch before the start of Japan's professional baseball game between the Giants and the Chunichi Dragons at Tokyo Dome in Tokyo, Japan, Friday, May 8, 2009. Keen baseball fan Hanks is in Tokyo to promote his latest film "Angels & Demons" which will be shown around the world on May 15.

Actor Bill Murray threw the first pitch during Chicago Cubs season-opening MLB baseball game in Chicago, Illinois, Apr. 5. Here is a look at other celebrities who have stepped up to the pitcher's mound.