Portal is a Hell of a game, short, a tease at a concept, but a hell of a game that has the best end song ever (you also HAVE to see VG cats treatment of the song as well) and a wicked commentary running throughout. What is also amazing is this lego portal mockup that was created (using REAL lego pieces) that shows how wicked portal is (found on Kotaku):
A random and quirky look at my life, my passions, pop culture and all things geeky. I may discuss music one day and analog to digital conversion the next. Try to keep up and have fun with it.