Note: This post may be subject to gross use of hyperbole.
By far the best game in the history of man is:
Fuel Pipe on Skype
Skype has a bunch of built in games which you can play with the person to whom you are talking. These games are good since they make it seem as if you and the person you are talking to are sitting next to each other playing a collaborative game. This is why Fuel Pipe is such a good game. It is not too hard but requires both people to communicate to get their sides in synch. And in addition to this fun there is the amazing music! Whenever you complete a level in the game it plays this victory song that will brighten up anyone's day and make you want to dance.
If you are a Skype user I recommend trying Fuel Pipe out.