Jigga-what? How on earth did Nintendo manage that? Now, if they only reveal that when they said Genesis & Turbo-Graphx, they're also including games that were released for the CD attachments for those systems, I'm going to be really excited.
I'm worried somewhat about price, mostly because Nintendo had the nerve to release a few old NES games on the GBA at $20 a pop about a year or two ago. If Nintendo prices these game downloads at around $5-$10 for the popular stuff and less for everything else, then they've got a winner. If they price things higher than that, I think people are just going to stay with the option they've been using up to now (play these games on computer emulators for free).
On the other hand, the Playstation 3 is supposedly able to run PS1 & PS2 games with no problems (in high definition no less!) so it's not like the Revolution is the only system in town that's going to have a huge backlog of awesome games. Moreover, it's already been confirmed that PS3 games aren't going to be region specific which means its quite possible that not only will the PS3 be able to play old PS1 & PS2 games, but it will also be able to play old import games as well.
I'll probably buy a Revolution at launch assuming there's something decent for it and then pick up a PS3 when it starts getting the good RPGs. I imagine in the end, I'll have more games for the PS3 than the Revolution just like my Gamecube vs PS2 situation (if it wasn't for RE4, Naruto 4, and the upcoming Zelda: Twilight Princess, I would just pack my Gamecube away).