If you're the kind of person who enjoys coding on your way to work, you might want to try Pixelang, a new Palm OS / Windows / Linux programming language for video, which now has various sound synthesis possibilities. The always-excellent Palm Sounds blog has been playing with it for a while, and one of their readers posted a interesting/irritating Pixelang demo on YouTube. In short: Try this if you find Reaktor too simple to bother with.