Not a lot is known about Jared Laughner yet, but expect that to change in the very near future. You can see what is believed to be his Youtube channel at http://www.youtube.com/user/Classitup10 (via).
"People familiar with the investigation tell The Associated Press that the gunman held in the shooting of Rep. Gabrielle Giffords of Arizona and others has been identified as Jared Laughner."
Past related post:
Berman Post: Gabrielle Giffords (D) Shot in The Head