For those who use Eclipse in Leopard or Tiger, here's a little tip on how to turn off font antialiasing. There is a system wide setting in the control panel, but it affects all applications. Usually I like smooth fonts - but not for programming. To selectively disable antialiased text for eclipse, fire up console and enter this command:

defaults write org.eclipse.eclipse AppleAntiAliasingThreshold 20

So there you go, and thanks to Tim who published this trick as a comment to a more hacky solution to this problem.