The following response comes from Nintendo Power's 'Pulse' section, which answers mail sent in by readers...

"Upcoming Virtual Console releases are a closely guarded secret, but consider this: Metroid went up right before the launch of Metroid Prime 3, and Super Mario Bros. 3 arrived just before Super Mario Galaxy. If the pattern holds up, there's a decent chance that we'll see the return of the original N64 Smash before Brawl arrives."

Direct link here

Hmmmm...I definitely like those odds. I haven't played the original Smash Bros. since right before the Cube came out! Huge thanks to Joeker for the heads up.