A while back I wrote about how Steam, Valve's online videogame store, was coming to Macintosh. Well, it came. And then they were giving Portal away for free . . . sorry, I forgot to blog that. And now, today, Half-Life 2 is now available for Macintosh (only 5 1/2 years after its PC releaes) for only $6.99. Yes, for less than the price of a New York sandwich you can own the best video game ever. There, I said it. Half Life 2 (and Half Life 2 Episodes 1 & 2) are the best video game ever. Yet.