What is the best videogame system out there?

I would like to know what all of your favourite Video Game systems are. So can people please post their favourite system and you can also state why it is the best and why another is the worst. So the systems can be anywhere from the Atari to a computer. I guess that I will start things off.

Well I have two favourite systems, my first one is the Xbox 360. It is one of my favourites because you are able to play some of the hottest titles out there and also it can be used as a media player. My other favourite is a computer. It also is one of my favourites because you are able to do so many things on a computer. You can go on the Internet, talk with your friends with an IM, you can also play many of the new games(if you have the system and the cash) and you can just search for things on the Internet.

Please start to post and and comment on my choices. You can add to my ideas or you can completely disagree with them, but just post your comments and I hope that there is a bunch of diversity in the different systems that everyone likes.