Back in 2006, I used Mono on a project. I could take it or leave it. Nothing to really get excited about. I watched the Mac, and Apple, come back from the brink and started to think, how can I get on that platform. Well, obviously Mono was the platform to get there easily, so I bought a Mac in 2007. Now, where's the MonoDevelop for the Mac,,,,,hmmm, it doesn't exist. Now, we're there. We have MonoDevelop on the Mac. We've got MonoTouch. We've got all kinds of cool stuff coming. Check out Miguel's State of the Mono blog post.
I'm really excited about the MonoDroid project. Lots of other cool stuff coming down the road.