Spiceworks is a free, easy-to-use, network scanner interface that combines Network Inventory, Help Desk, Reporting, Monitoring and Troubleshooting.
Look @ LAN (or LookAtLAN) is a free advanced network monitor, which allows you to monitor your network in few clicks. Extremely easy to use and very fast in discovering your network’s active nodes.
SuperScan3 is an awesome lite-weight network scanner for windows.
Nautilus is the default file browser in the Gnome desktop.
HowToForge is one of the best sources for Linux related How-To’s.
Lego Mindstorm is a great geeky way to have fun with your kids.
BugLabs , is modular-snap-together Linux goodness!
Rockbox is replacement firmware for iPods and other media players.