Debian Linux, my choice for linux and hopefully yours too!!!
http://www.debian.org

Distrowatch is a great site for checking for new releases of hundreds of linux and bsd distributions.
http://www.distrowatch.com

Gnome-look is a great website for finding new wallpapers, gnome themes, gnome icon sets, etc.
Also, don't forget to look for content from spoudumen, as I upload new items about every other week!!!
http://www.gnome-look.org

KDE-look is almost the same as gnome-look except for, you guessed it, it centers around the KDE environment. More wallpapers, themes, icon sets, widgets, etc. The same thing goes for this one, keep checking for content from spoudumen.
http://www.kde-look.org

Virtualbox.org is a site with free virtualization software used for running Windows inside of a Linux machine, Linux inside of a Windows machine, etc.
http://www.virtualbox.org

Linux Mint is Jenny's linux of choice. Based off of Ubuntu, and therefore Debian, it is a good, solid distro.
http://www.linuxmint.com

Well, I guess thats all I feel like typing for right now but check back soon as I'm sure I'll add more of my favorite links everyday for the next couple weeks. As always, happy computing!!!