I've been reading a lot about development on the iPhone/iTouch.  I've been reading about using Mono and Unity.  You put a bunch of code together, mix vigourously, and out pops some .NET Code running  on the iPhone/iTouch.  It reads like a major pain to get working.  While I would have to buy a copy of Unity, that's not a big deal, its the getting it working part.  Then, just the other day, I read that the Mono Project is working on MonoTouch.  At that point, I just started druelling.  I download MonoDevelop for my Mac.  It works, but its clerly an early product.  Anyway, I'm excited about the possibilities.  We'll see what the product looks like in August/September.