Okami Flash Game
Okami is a game that's coming out for the Gamecube and PS2, which has a very distinct and artistic style. Of course they're the same people, Cover Studios, who made Viewtiful Joe, so I guess it's not necessarily surprising.
When I first saw this Flash game, although I didn't immediately recognise that it was from Clover Studios, I did recognise the artwork from the game itself. Although this Flash game isn't necessarily fun, it is beautiful. The artwork, animation and music is all very wonderful.
Link (via Chamboultout)