I find Jen Stark's paper sculptures quite spellbinding. They are absolutely gorgeous and I can't seem to look away. Definitely much nicer than anything I (or you) have ever made with construction paper.
Via Taylor McKnight.
ETA: According to this article in the October 2007 edition of Wired Magazine, Stark "draws her inspiration from fractals, wormholes, and MRI scans." Also here's her blog.