Three years ago, a smattering of Japanese companies came out with what they called "wireless TVs" -- small LCD displays that received their content from a base station connected to cable. Those products never went anywhere. At press time, however, Samsung planned to release its new HP-TS064 Plasma TV, which features Wi-Fi, at the Consumer Electronics Show in January.

The Samsung uses Wi-Fi in a totally different way from the old "wireless TVs." It doesn't get its regular TV signal over wireless, but it can connect to your PC over Wi-Fi, so you can watch YouTube videos or other Internet- or PC-based content, such as photo slideshows, on the TV.

The year of the mobile trackball

This year, the trackball will become the hot input device for mobile gadgets, especially smart phones. For a decade now, mobile devices have employed rocker dials, scroll wheels, thumbwheels and other input technologies for navigating menus, moving cursors and controlling various features.

Suddenly, however, two of the hottest brand-new devices -- the T-Mobile Sidekick 3 and the RIM BlackBerry Pearl -- are taking older devices to school with their super-fast mini-trackballs. The smart phones use them for everything from camera zoom to ripping through icons and menus.