Let's make this birthday one to remember.

46 years old (Born on March 01, 1978)

American actor; He is famous from Dean Winchester on Supernatural.

Was offered a role as Eliza Dushku's love interest on "Tru Calling" (2003), but chose to take a role on "Smallville" (2001) instead. Eric Christian Olsen was eventually given the role and the character's name was changed to Jensen. Was a child model at age 4, then quit, and started again at age 10. He is the son of actor Alan Ackles and Donna Joan Shaffer. His first name is actually a surname and is the most common surname in Denmark Also sings and plays guitar.

His parents were going to name him Justin but his parents thought it was too common.

Has one brother, Joshua, approximately three years older, and one sister, Mackenzie, approximately seven years younger.

Jensen's parents named him Jensen because they considered other names but found them too common. Ackles, Jensen's last name, is pronounced like 'Cackles' without a 'C.'

His parents were going to name him Justin but his parents thought it was too common

His first name is actually a surname and is the most common surname in Denmark.

Graduated from L. V. Berkner High School, Richardson, Texas in 1996.

Has one brother, Joshua, approximately three years older, and one sister, Mackenzie, approximately seven years younger.

Enjoys horseback riding.

Played baseball and lacrosse in high school.

Is of Irish, English, and Scottish ancestry.

His career has an ongoing theme of dealing with demonic forces. His character's mother, "Marlena" on "Days of Our Lives" (1965), was possessed by the Devil. In the movie Devour (2005), he was the son of "Satan". On his television series, "Supernatural" (2005), his character battles the forces of hell.

Planned to study sports medicine at Texas Tech University and become a physical therapist, before he decided to move to LA to give acting a try.

He is the son of actor Alan Ackles.

Played baseball and lacrosse in high school

Good friends with LeAnn Rimes and Christian Kane.

1990 graduate of Dartmouth Elementary School in Richardson, Texas.

Fan of the Dallas Cowboys.

Also sings and plays guitar

Was runner up to Tom Welling for the role of Clark Kent on "Smallville" (2001). Was brought onto the show in season 4 as Lana's boyfriend.

1993 graduate of Apollo Junior High School in Richardson, TX.

He is a keen photographer and is always taking photos on the set of "Supernatural" (2005).

Enjoys horseback riding

(August 2008) Filming season 4 of Supernatural in Vancouver, British Columbia

Jensen`s parents named him Jensen because they considered other names but found them too common. Ackles, Jensen`s last name, is pronounced like `Cackles` without a `C.`

Best friends with co-star Jared Padalecki. Jared Padalecki even calls Jensen`s father Papa Ackles.