I've only recently started Portal; I'm still at the very beginning of the game where you have to generate power to a couple of circuits by blocking energy balls, holding a block. I really like it so far.
Any of you guys on steam? Anyone care for an EMF group on steam?
Edit:
https://www.dropbox.com/s/08lpfh9fyoa6udq/EMFsteam.jpg This could be the groups logo, lol.