Jason: I’m better looking in person.
Jason has a large scar on his leg.
Jason is openly Jewish.
When season one of How I Met Your Mother wrapped up, Jason bought a house in Hawaii for a month.
Jason loves people recognizing him and walking up to him in the street.
Jason was cast as Marshall in How I Met Your Mother because the creators were fans of Freaks & Geeks.
Jason is the middle child of three children.
Jason's acting career started after attending an audition he was told was fake. It turned out that the 'mock' audition was real, and the 'fake' casting agent was really the president of Paramount.
Jason loves Disneyland.
Jason plays the piano.
Jason and his friend Brian were wrestling in the pool, and Brian's finger went into Jason's eye. He ended up having to go to the doctor. Luckily the damage wasn't permanent!
Jason used to date his Freaks & Geeks co-star Linda Cardellini. He is currently single.