This guitar from ThinkGeek is a real electric guitar with a lot of features. It has metal strings that never break and never go out of tune. It supports finger picking, slides, and chord-based playing; it even has a whammy bar to allow you to bend notes. It’s a synthesizer with 25 guitars, 50 synths, 25 tracks, and 50 drum tracks. It’s also a MIDI controller that lets you “load up your favorite multi-track recording or sequencing software, plug in your YouRock, and output MIDI data directly” without needing a keyboard. You can even use it as a Rock Band controller. It has a lot more features that a non-musician like myself doesn’t really understand, so go read more at ThinkGeek’s YouRock page. The YouRock MIDI Electric Guitar is $199.99.