SurroundSound Bar for Bedroom TV

I'm a fan of the Yamaha series of sound bars. I use one in my main video system due to room constraints, and it gets you about 80% of the way to a full surround system. The built in calibration routines make it easy to set up. It does work better with an external sub, but is OK on its own.

http://www.yamaha.com/yec/products/productdetail.html?CNTID=556970

Tanglewood -
The Yamaha sound bars don't use left and right speakers. They bounce directed sound off the side walls to create the side and rear speaker effects. On board digital processing controls the timing of the signals to produce a convincing effect.

This does create some room constraints. You need a reasonably symmetric room with parallel walls on the left and right.

The only additional speaker is an optional sub.