Most consumers dislike having to run cables from the front of the room where their system is, to the back of the room where the surround speakers need to be. One way to help with this problem is wireless speakers.

The problem is, all wireless speakers are really just wire-less, as in less wires. They all need to be plugged into AC power, or come with a wireless receiver/amplifier that needs to be plugged into AC power. The advantage, though, is that wires don't need to be run from the front of the room.

Many companies are now shipping wireless subwoofers, especially packaged with soundbars.

Many companies make wireless speakers, notable Polk, Aperion, and Panasonic.

HomeTheaterReviw.com's reviews of wireless speakers include:

Vizio VSB210WS soundbar with wireless subwoofer
Aperion Audio Zona Wireless speakers
Aperion Audio Intimus 4T summit wireless