Got this for my daughter on her third birthday in Septmeber '08. She loves it. Well worth the £40 I paid for it.
The controller is just a perfect design for little hands and can actually be adjusted for left handers. Nice big, colourful buttons and the "pen" which you have to use for some parts of games, eg drawing shapes and letters.
The console also has a mic for singing the songs that are included on some games. And it has a handy on and off button and can be stored away in a little compartment on the console or placed on the little holder on the side. There's also space for storing about 8 games.
An adaptor isn't included, which really should be. Luckily we had one at home and I also buy rechargeable batteries and usually have some spare. If you do use batteries, then I would suggest rechargeables for this. I have to replace them every couple of weeks, but it depends how long it's been played with.
The console is very educational, so I don't worry about my daughter playing with this. The Dora game has shape, colour, number and letter games on it. My daughter did find parts of the Dora game hard at first, but she now completes the whole game by herself. As long as you leave the cartridge plugged in, the game can be saved and continued later.
My daughter also plays a Mickey Mouse Clubhouse game on the console as well and this game is also educational. We got her the art studio for xmas and she loves "drawing" pictures on that.
Her 4 year old friend got one of these after playing with our daughters and loving it. She brings her own controller when visiting, so they can both play 2 players.