Apple today introduced the Mighty Mouse, its next generation mouse which offers power users up to four independently programmable buttons, without compromising simplicity for users who prefer just a single-button mouse. Mighty Mouse also introduces a new Scroll Ball that lets users scroll in any direction-vertically, horizontally and even diagonally. With the Scroll Ball, users can scroll with natural, fluid movements, making Mighty Mouse perfect for applications from viewing Web pages and photographs, to video editing and music creation. Mighty Mouse is priced at US$49 and is available now.