If you don't know what KVM stands for, you don't need it: A keyboard/video/mouse switcher allows an IT staffer to run a bunch of servers as quasi-headless computers in which a single mouse, keyboard, and monitor are shared via a switch. It's a big business, because especially in the Windows world, there are a lot of functions that are most easily carried out when directly connected to a computer instead of adding complication with terminal servers and other virtual remote controllers.
This wireless KVM controller is a single-PC device, however, for $995. It uses 802.11a and secures the connection with AES. It supports 24-bit color at a 30-frame-per-second refresh. This seems like an awfully high price except for specialized applications, and I expect we'll see switchers instead of one-to-one controllers in the near future.
802.11a is, as we know, a better choice for media because of the uncrowded 5 GHz band.