An air mouse doesn't need a surface and can control your cursor from across the room
Computer users are no longer desktop-bound. These mice allow you to control your cursor from the air, even from across the room. They are great for home theater systems, PowerPoint presentations, or just tired wrists.
MX Air Rechargeable Cordless Air Mouse
The sleek, wireless MX Air works on a flat surface like any other mouse. Pick it up, and it instantly becomes an air mouse that works from up to 30 feet away. Volume and Play buttons make it great for home theaters. It gets its power from a charging dock, though, so it's one more gadget you have to plug in. COST: $150
Gyration Air Mouse
This compact device also functions as a regular mouse or an air mouse. But it works a little differently: To move the cursor when it's working as an air mouse, you must press a little trigger, which prevents accidental mousing. It can work from up to 100 feet away, and it runs on batteries, making it better for travel than the MX. COST: $80
Air Mouse Pro
The Air Mouse Pro application can turn your iPhone into a wireless touchpad or an air mouse. It knows which program you are using and provides appropriate options -- Volume and Play when you open a music program, for example. It connects via a wireless network, so you can control your music even from another room. COST: $6