The starting experiences for the races being introduced in Blizzard's World of Warcraft: Cataclysm expansion, so far, are very impressive. After the introduction of phased questing in the Wrath of the Lich King expansion in late 2008, the designers at Blizzard have compiled all that's been learned and put together some of the most entertaining MMO questing experiences I've played in a long time. The Alliance get the Worgen race, a wolf-like race of humanoids you can find details about in previous coverage.
The opening tale is a serious one, still inflected with Blizzard's goofy Warcraft humor but also grim and dark, a tone mirrored in the dense, misty woods and jagged rocks of the Gilneas starting zone. The Goblin race, which joins the Horde, is by comparison much more lighthearted in tone and, at points, quite funny as you strap on rocket shoes, throw parties, and drive ridiculous cars to get through the first few levels of life.