<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by ScottC:
No powerports in coach, and as far as I know also no powerports in Business. With the possible exception of some seats on AA no coach seats offer powerports.</font>
US's Airbus fleet has power ports in all classes (that's in the A319/320/321 in addition to the A330 according to their site).
There are a few examples of 110v (US/Japan/etc-style) plugs in biz/first class that I've heard about, but I don't recall the specific airlines/planes, except that it's not any of the US carriers.