I am flexible, creative and innovative. I can be used in a variety of ways, for many different purposes; I'm probably bisexual, or at least I sleep around a lot.
Use me right, and I will make your world a better place.
Grrr. This would be such a cool answer if it wasn't for one sentence.
I want to be the five-block diagonal piece in Welltris. The one that no matter what you do it doesn't fit into anything and you spend the next 100 or so pieces rearranging the entire screen around it, but you kind of relish the challenge even while you're cursing it, because without it the game would get too boring.
Or a heart-shaped piece. That would be cool.