Okami

Discovered it somewhere in December when I was bored.
Ended up playing it throughout the rest of the year in tech class.

It's simple:
drag your mouse toward the right of the screen, moving Amaterasu forward. The longer you stay there, the faster she goes.
You will run along a line of money. It will switch from the ground to the air and back to the ground. how do you reach the ones in the air? Jump, of course. (click)
Don't slow down, that's the only way to get the coins.

Why am I telling you these directions? Oh, well I hope you can read Japanese then; there is no English setting.

http://dagobah.biz/flash/okami.swf

My high score is 4006.