Learn Guitar With Flash
I just came home from my 4th guitar class with the chords and bass pattern to Ring Of Fire by Johnny Cash and after some practise I got it going. In my struggles I couldn't help but wish there was something out there where I can specify the chords, strum pattern, set a tempo and hit play to get a pace partner.
I scanned around and found a fun site called ActionTab.com which has interactive flash fingerpicking demonstrations with two speeds. It is just okay as a tool for beginners - I think I want what I described above though so I'll add it to my todo pile and if I get any spare time to work on this I will post it here when I'm done.