No, I'm not dreaming stuff up. According to Sega of America's president Simon Jeffrey, they expect to sell a million downloads of Super Monkey Ball on iPhone. This is the source. There are other really interesting things in that article besides that. Apparently, the top 5 of all paid apps are all games, and the top 10 has 7 games. Also, according to the article, games can be as big as 100 MB. I suppose that limit is set by Apple, I don't think there are any technical limitations for a game to be even bigger than that, so maybe at some point Apple can up the size limit if it becomes a problem.
Another interesting thing is that the article hints at sales figures becoming available after a few weeks. If that's true, that would be awesome, but I have my doubts. If you read this, you'll know why. I really hope those are just launch related problems and things will get smoother and Apple will give more information and better service to all devs, but who knows. But to be completely honest, if the devs don't know how much their app is selling, that kinda sucks big time.
Anyway, back to the original topic. If Super Monkey Ball reaches a million downloads, that means a minimum of $7 million of revenue for Sega, and probably a bit more since the price in Europe is €7.99 which at current rates is about $12.5. That would be an insane ROI for Sega 
