Radio Shack has been closing out Canon Powershot A520's for under $150 recently. I've seen them in several stores. They are a great 4 mp cameras for point and shoot applications. They have some decent manual controls too if you wish to delve into that. They are highly rated by
Steve's Digicams which is the number one source for camera info for lots of people. Steve compares every camera made and posts sample images all of the same subjects so you can see for yourself just what you're getting compared to everything else. Steve is always right on the money with his ratings and he rates these cameras very high.
No they aren't 8 mp but realistically only pros need resolution that high. Printers can't match that level so most of those pixels are overkill. It will produce killer 8 x 10 photos which is what most people want out of a point and shoot. It fits easily into your shirt pocket and it takes hundreds of shots on a single set of rechargable batteries. They are VERY hard to beat in this area.
I have a video production company so I think about such things a lot. I bought two of these cameras in the last 6 months one for my wife and one for my daughter. Both love this camera. I almost bought another one just to carry in my shirt pocket but I guess I don't need to buy 4 cameras a year. I would buy another one of these in a second if I had a good reason to get another camera.