A brand of guitar made by the Jackson Guitar company. Generally good solidbody electric guitars for heavy metal and jazz. A nice full tone that lacks twang. The standard shapes are:
Dinky: similar in shape to a Fender Stratocaster
Rhoads: Similar to a gibson flying V, but not looking as stupid or clunky. Named after Randy Rhoads, original guitarist in Ozzy Osbourne's first band. Uncomfortable when played sitting down.
Kelly: A wierd shape with lots of nice curves and a few pointy bits. Vaguely reminiscent of a Gibson Explorer.