As my middle school self would tell you: artislife2me.
At least my cyberly-AIM-screen-name self would tell you that.
(And yes, I thought it was cool.)
So I decided what I think art really is (beyond the physical mediums it's condensed to).
My definition of art: art (n.): the process by which one discovers, collects, rearranges, and exchanges ideas. What's your definition of art?