Jason Segel is an American actor, comedian, writer, and musician. He is known for his roles in:
* How I Met Your Mother (as Marshall Eriksen)
* Forgetting Sarah Marshall
* The Muppets
* Freaks and Geeks
* Bad Teacher
* Sex Tape
There is no notable actor or public figure named Jason Agron. If you have any more information or context, I can try to help you further.