Graduated from Truman State University in Kirksville, Missouri

Sister-in-law of Brian Gunn, Matt Gunn, Patrick Gunn and Sean Gunn.

Auditioned for the role of Sydney Bristow in "Alias" (2001), but was never called back. She later said, "They said they liked my acting but I wasn't hot enough.

Has one sibling - Emily, her younger sister.

Eerily connected to many "Jims" in her life - her father Jim Fischer, her husband James Gunn, Jim Zulevic (who casted her in The Specials (2000) and subsequently introduced her to James), and finally (and more famously known), her TV counterpart Jim Halpert (played by John Krasinski).

Took her first acting class with Sean Gunn (who stars as Kirk on WB's "Gilmore Girls" (2000)) at the age of six in St. Louis, Missouri. The class was taught by her mother, Anne Fischer. Jenna and Sean stayed in touch over the years and in October 2000 she married his brother, writer/director James Gunn.

Worked as a receptionist in various offices. Types 85 WPM with 90% accuracy.

#37 in People Magazine's 100 Most Beautiful, 2006 issue.

Fractured her back in four places after falling down a set of stairs at the NYC bar, Baddakan, on May 15, 2007.

Daughter of Anne Fischer.

Mother Anne Fischer and younger sister Emily are both elementary school teachers.

Considered becoming a veterinarian due to her love for animals; ultimately opted for working with Kitten Rescue and being the proud owner of a dog and a cat (Andy, featured prominently with Jenna in 2006 issue of People Magazine's 100 Most Beautiful).

First met husband James Gunnat a script reading for The Specials (2000), which he wrote.

Originally enrolled at Truman State University as a Pre-Law student; later changed to Theatre.

Went to Nerinx Hall, an all girls Catholic school in Webster Groves, Missouri.