For anyone not already in the beta, it was cracked a couple days ago, allowing anyone to download it and play skirmishes against the AI, figured some of you would be interested.
So, basically, you unpack and install the game. Run updates. Unpack the maps where ever you want. Unpack the crack for the difficulty level you want to play on directly into the Starcraft II Beta folder in programs files and let it overwrite. Then you run LazyLaunch, which will prompt you to select a map file, and then launch you into a 1v1 skirmish with you and the computer each being given a random race. If you want to play a different race just F10 -> Restart and it will quickly restart with new races and starting locations.