Also, Comcast will be offering professional installation, upon customer request, of TiVo Premiere boxes at no charge.

ENGADGET: TiVo releases Q4 results, announces transcoder and IP set-top box on the way

"A LightSpeaker package eventually pays for itself, through savings on professional installation, separate audio components and energy consumption, " concluded Jacobs.

ENGADGET: Klipsch LightSpeaker makes whole home audio as simple as screwing in a light bulb (hands-on)

It's usually a windshield installation or dashboard mount, but there's no professional installation necessary, you just turn it on and go.

ENGADGET: The Engadget Interview: Christian Bubenheim, general manager, Magellan Consumer Products

Artify.it was the only site that included installation by a professional art handler as part of its membership.

WSJ: Art-Rental Sites Let Patrons Try Before They Buy

Over the years Home Depot has added so many product categories--as well as installation services and professional businesses--that it's effectively reduced the number of households needed to support a store from 154, 000 in 1990 to 30, 000 today.

FORBES: Profit in a big orange box

The initial installation of Digital Life will be handled by a professional.

ENGADGET: AT&T to release Digital Life home automation in March