My brother, the lucky bastard, got a Garruk in the one prerelease box he picked up.
But at least I got a full playset of Goblin Rabblemasters between my two prerelease boxes and the buy-a-box promo. >_>
And I did get a foiled Siege Dragon in addition to the prerelease promo equivalent.
EDIT: For the prerelease I played a red-green goblin-focused deck with two Rabblemasters and some other fun stuff, and ended up in 9th-or-so place out of 38 players. For the release I actually managed to run a mono-red deck and got 3rd place out of 14 or 16 players. Unprecedented success for me, although it didn't win me anything special.