Recently, I got all the stars in Super mario 64 ds and guess what I got for a reward? The grate on the cannon in the courtyard was undone. So I blast to the roof and find three one up mushrooms, A power flower box, and a rabbit if you go up with Luigi. And in Galaxy, if you get all 242 stars, you get a notice on the Wii buletin board with a picture attached to it. I know, playing, doesn't really qualify as work, but I did put a lot of effort into all of that. And the only reason I did it was because I thought something amazing would happen.