Along Abob's lines, I'll throw in Symphony X (The Odyssey), Manowar (just because), Dream Evil (Dragonslayer), Saxon (Crusader, Lionheart especially), Rush (A Farewell to Kings - has some nice light pieces in it), Dungeon (Aussie Power Metal Band), Iron Maiden (of course!), oh and of course Crescent Shield (Cali Power Metal - RIP Michael Grant!).
Crescent Shield - Keep It True Festival '08.
Symphony X - The Odyssey
Saxon - Lionheart
Manowar - The Crown and The Ring
Dream Evil - The Chosen Ones (Dragonslayer)
There, I've Power Metal Geeked out sufficiently for this post!