Apple's QuickTime is the go-to Mac OS X app for video playback, but there's more to QuickTime Player than meets the eye. You can rewind and fast-forward movies, increase the audio level beyond the slider limit, and even scrub frame by frame through the movie like you can in Final Cut Pro! Check out these 15 useful and largely hidden keyboard shortcuts for QuickTime Player, they are sure to improve your QuickTime movie viewing experience!
"Snow Leopard comes with the brand new QuickTime called X (Ten). This version add a few 'previously pro-only' features such as trimming and exporting, and also 'brand new' pro features like screencasting and sharing."