Why have I only learnt this now?

There's a game for the PC called Frets on Fire. It's a guitar hero clone BUT it's open source and free. To all you laymen out there, this means it's free to download and the source code is freely available to modify as you see fit. Conclusion: You can download a shit load of stuff for it and it doesn't cost a thing.

But here's the REALLY cool thing about it, you can connect a ps2 Guitar Hero controller to it as long as you have a ps2-pc dongle.

Now that is effin' cool. Gotta get me some frets action this evening...