I found a full, in-browser HTML5 Gameboy Color emulator and it runs like a dream. I was going to post this about a half an hour ago… but then I started playing Pokémon Pinball.
In about four hours, Mari0, the Super Mario Bros. and Portal mashup game will be released for every OS, free of charge. I cannot tell you how excited I am. Check out this sweet preview of the game, then wait eagerly until 5:00 EST arrives.