Websites

Fan Sites

Jen-Garner.net - regular updates, plenty of info
Jennifer Fan - fairly regular updates
Perfect - loads of pictures
J G Pictures - even more pictures ;)

Other Sites

Fan Forums - discussion boards
Frinks Directory - links to other Jennifer sites

Other Celebs & Topics

Angelina Jolie Planet - News and info on Angie
Olsen Twins Planet - Mary-Kate & Ashley
So Avril - Avril Lavigne