People saying the game sucks are only saying so because of the difficulty and repetition, the game itself is a nice idea but after around 12 levels it gets boring.
Jonathan Coulton did an amazing job doing the theme to Portal, I'm glad to hear he's coming back for the second, if he's playing in a bar near you go see this guy he's great to meet and hear
Although this is a really good game, it's extremely frustrating when your close to completing the round, only to find a stupid blue or orange blog taking a cheap shot at you.