pie-in-the-sky: -phrase, idiom. 1) A state a perfect happiness; utopia, xanadu. 2) A fantastical wish. 3) To hope and plan for the impossible. 4) The end of the rainbow. 5) Big ideas and dreams.
Seems awesome, no?
Speaking of awesome, here's a picture of me with a real live pie! Yes, it really is...real...and live! It's not a pie in the sky though, just one hanging out on the highway. Then again, I'm not sure how I would have gotten my picture with it if it were really in the sky, barring jumping out a plane.