paiTouch, an iPhone application created by Japanese blogger Technohippy, is a virtual breast. You can poke and prod it all you want and it kind of jiggles around. It's actually pretty crappy. You can test it out here, just click and drag the cursor around. I've got to admit: if this is what touching a booby is like, I'm not that excited about it anymore. Now a penis....JK!
Virtual Breasts, Coming to Your iPhone [inventorspot]
Thanks to Phil, who touches enough of the real thing to not need a stupid app.