User created content. Being able to dream and then develop those visually through a medium like LittleBigPlanet and Far Cry 2 (level editor) is greatly improving how the gaming community communicates and interacts.

I finished my first Published FAR CRY 2 Community Map "Dogon Raid". Fine tuned it online last night and played nicely with others.

It is a very rewarding feeling interact inside something that you have created. Which further motivates my imagination and creative instinct.