In reply to Fraser:
> I had no idea those huge boats could go so fast or that they effectively 'fly' clear out of the water!
Hydrofoil is the term you're looking for.
> One question though: if Ben Ainsley is a Brit, how come he's sailing for Oracle Team USA?!
Don't go there; ask yourself why NZ couldn't defend the AC in 2003? The larger budgets of the international teams coerced our sailing prowess to change ship, no pun intended. We lost many'a good sailor to the Swiss' 2003 challenge and the result was NZ failed to defend. Similarly, Russell Coutts is a Kiwi and you could attribute a large amount of Oracle Team USA's success to his experience.
Regardless of the politics, the racing makes for gripping viewing IMO.