Check your Shop Channel, American Wii owners. Super Metroid on the SNES, now available for download from the Wii's Virtual Console.
Bit of a funny fact though: while both the UK & USA were given Metroid (NES) on VC, the UK hasn't been given Super Metroid yet. Yet the die-hard US gamers only had a week to complete Metroid before this came out, while UK gamers can happily play Metroid while waiting!
Go on, download it.