Via dailywireless by way of Wi-Fi Networking News, Ewrt looks like an excellent alternative firmware for the Linksys WRT54G. It was forked from the Sveasoft distro (the bleeding edge Samadhi2 stuff is now non-free) and includes NoCatSplash, traffic shaping, SSH/telnet management, and lots more.
This looks like a great alternative firmware for the WRT54G. The WRT54G is on the top of my tech to buy list. It’s so hackable.