The days of 192.168.0.1/24 have ended. Long live 3ffe:ffff:0000:f101::1/24!
As you might have guessed, I am using IPv6 on my LAN. It is quite awesome. In addition to lots and lots and lots and lots and lots of possible IP addresses, there are some other benefits:
1. More resistant to spoofing.
2. QoS and priority stuff. Important stuff that needs to be done very quickly (such as SSHing into a nuclear reactor or something) can take priority over a game, or a video stream, which can take priority over browsing and e-mail. Not that its noticable.

3. Multicasting. Very, very cool if you've got some extra NICs to stick in your server.