- Actor William Petersen is best known for playing Dr. Gilbert "Gil" Grissom on the TV series CSI: Crime Scene Investigation.
- He left the regular cast of CSI in 2008.
- Full name: William Louis Petersen
- William's nickname is Billy.
- He was born in Evanston, Illinois, on February 21, 1953.
- William Petersen Height 5'11" (1.80 m).
- In 1998, William Petersen portrayed President John F. Kennedy in the TV film The Rat Pack.
- Petersen is the young of 6 children.
- William has two brothers: Arthur, Jr. and Robert, plus three sisters: Anne, Mary Kay, and Elizabeth.
- Parents: June (née Hoene) and Arthur Edward Petersen
- Petersen was honored with a star on the Hollywood Walk of Fame in February, 2009.
- Petersen is right-handed.
- Petersen is of Danish descent.
- William Petersen shares his birthday with actor Alan Rickman.
William Petersen facts
