I don't know what camera to buy?

I wanna buy a dslr camera but I don't know which one to get? What should I look for in a good camera? Does higher megapixel mean better quality? Which brand? Nikon, sony, canon?

I'm no professional, I only need it for holidays, family pics, videos, everyday etc.

List me a few good cameras please.

http://www.cameras.co.uk/html/digital-camera-buyers-guide.cfm (UK website)