Let's make this birthday one to remember.

43 years old (Born on July 24, 1981)

Actress; She is famous from Firefly, Serenity, Terminator: The Sarah Connor Chronicles, The Cape.

Summer appeared at the Armageddon Pulp Expo in Auckland, New Zealand in October 2006. Filming Knights of Badassdom was like six weeks of Summer camp. (summerglauwiki.com) She is a fan of the Dallas Cowboys. Her favorite television show is Brothers & Sisters. She loves to watch cooking shows.

She had not actually seen the Terminator movies, before being cast in 'Terminator: The Sarah Connor Chronicles'.

Summer drives a dark red Mini Cooper named Luca.
(tv.com)

Auditioned for the role of Kitty Pryde in X-Men: The Last Stand and even asked Joss Whedon (who was writing Marvel's Astonishing X-Men comic book at the time and whose ideas contributed to the plot of X-Men: The Last Stand) for assistance in preparing for the part. Ultimately, the role went to Ellen Page.

When preparing her character of River on Firefly, she would think back to herself as a young girl and take those experiences and put them into her performance.

Whilst practicing shooting on the set of Terminator: The Sarah Connor Chronicles, she got too close to the shooting range and now has a small scar on her face. (tv.com)