Possibly the best thing about Metroid Prime 3: Corruption is that it's inspiring Nintendo to release Metroid and Super Metroid on the Virtual Console. The Metroid series has pretty much been masterpiece after masterpiece (and also Hunters). We probably won't be indulging in the VC releases, since we own the NES, GBA, and Gamecube releases of Metroid and a well-loved SNES Super Metroid cartridge, but any time one of the classic games is made available for a new generation of gamers, it's great news.
What's your favorite Metroid game? We play through Super Metroid at least once a year, but nothing beats the original for pure, immersive atmosphere. But maybe you prefer one of the first-person games?