Mono running on OS X

The other day I installed Mono on OS X 10.4.7. The install was painless, I downloaded a .dmg, opened it up, and double clicked the install package. 20 seconds later I had Mono installed and was writing my first "Hello, World!" program. That's how installing all programming environments ought to be.

Now all I need is an idea of a test program to try it out on. :-)