Can anybody think of any serious problems with Portal?

Cuz I sure can't.

Odds are you already know about this game. If you haven't played it, it's on sale pretty regularly on Steam for like $2. Two measly dollars for one of the most unique and enjoyable puzzle games of all time. It's not long, just a few hours. But just like a great film, those hours will leave a lasting impression.

And just wait until you play the sequel.