I've been messing around with a high-speed consumer camera from Casio. The Exilim EX-FC100 can shoot 30 images at 6 megapixel resolution in one mere second, and allows for slow-motion video shooting of up to 1000 frames per second. It's the slow-mo stuff that's interesting for golf nuts. I've found that 210 FPS gives the best results for capturing golf swings. To wit, here is some recent video that Metro instructor Gregg Thrall captured with this camera. He recorded Nationwide Tour player Dong Yi on his recent visit to the Metro driving range.
(Image quality is better than the compressed stuff you see here)