Mac OS X comes with lots of things Windows doesn’t. It comes with one of the best browsers out there (Safari), a huge dictionary for both spell checking and definitions, a handful of good media programs (iTunes, iPhoto, and Front Row; I hate each of them but I’m in the very small minority), the best desktop calendar program ever (iCal), an AIM and Jabber client (iChat), an Image Capture program that can pull photos from 90% of cameras and scanners without installing a darn thing, printer drives for gosh near everything, a solid mail client that doesn’t try to take over your life, the simplest and most effective backup software ever (Time Machine), a secure password saver and retriever (Keychain), a system-wide Address Book that any application can hook into, and let’s not forget a decent Unix shell environment. [1]
The one place Windows actually comes with better default software is mspaint.exe. Whether you want to point something out or make highly precise technical diagrams, mspaint is about the easiest thing ever. Sometimes you want to make a boxes-and-lines diagram with OmniGraffle, and sometimes you want to do some Art with Canvas or ZBrush or The 800-Pound Gorilla… and sometimes you just want to draw something.
So today I found PaintBrush, an open-source bitmap editor for Mac OS X. It’s mspaint, translated to the Mac look-and-feel. Its tools are: pencil, eraser, select, paint can, bomb, line, bezier, text, box, and oval. It does no antialiasing. It can’t resize images after you’ve created them. It only has ten levels of undo.
I am so happy.

[1] Insert boring discussion about bundling and anti-trust here.