We haven't posted a fun Flash game in a while, so here's one to make up for the oversight: Splitter by Eugene Karataev.
It's a fun little physics engine game with the simple goal: get the smiley to its goal by slicing and dicing through stuff. It starts off easy, but it gets more and more maddening (maddeningly fun, that is!): Link - via Onelargeprawn
Thanks
@Him - you can view the solution to the first few levels ...