Saving a millisecond can save your life in a computer game. This is the first mouse that can record macros-sequences of clicks and keystrokes for common moves, such as grabbing guns and
reloading-while you're playing. A built-in LCD provides instruction. Microsoft SideWinder Mouse $80; microsoft.com
These earphones don't block external sound, so you can rock out while having a conversation or listening for oncoming cars. Instead of plugging your ear canal, the drivers hook in front of your ears and transmit crystal-clear sound waves through the cartilage. InAir AirDrives $100; airdrives.com