I have enjoyed lots of games from indie devs lately, and i also bought them all.
http://introversion.co.uk/ have some interesting games, their latest is called Darwinia and is published through Steam, i think they are about to become big, available in both Linux, Mac and Windows. They are also playing with a new game, visit their page!
http://s2games.com/ - these guys have made Savage, an rpg-fps genre with a cool community and great servers with a lot of teamplay and fun. For Linux and Windows. Savage 2 is underway and i have pre-subscribed to get access to the beta-test.

It seems that systems like Steams can help indie devs a lot to get out to people, it certainly helped Introversion a lot.

I recently discovered Xdmx, something that seems capable of splitting my desktop across multiple machines. Along with it, I was also thinking in lines of some kind of cluster system, like OpenMosix. My goal at the moment is to be able to run Quake 3 on three computers (two of which are laptops = limited expansion possibilites), giving me wider peripheral vision, or at least to be able to move windows around between the display. Unfortunately, I'm quite certain that at least OpenMosix would require more speed than 100Mbit for Quake 3, so I started pondering the same question: What cheap and fast network solutions exist?

So far, the best idea I can come up with is a mesh of those USB-USB link cables. If USB 2.0 is in the ~400Mbit range, it should be faster than 100Mbit, right? But then again, speed and latency aren't the same.. Comments are welcome :)