Since the consumer computer mouse was introduced in the early 1980s, we've seen design innovations like the scroll wheel (1995), the wireless mouse and optical mouse sensor (2001), and the laser-based mouse sensor (2005). Various companies have added extra programmable buttons, internal LED lighting, and even built-in fans to cool your sweaty hands. Today's gamers have a plethora of high-performance gaming mice to choose from. Is there anything else left to innovate? Mad Catz thinks so, and Benchmark Reviews checks out their latest mouse, the Mad Catz Cyborg R.A.T. 9 wireless gaming mouse, to see if they're right.