For Microsoft Money. While there are a few other Windows programs I would add * — I mean as long as it’s there — Money is the only one I “need.”
My iMac came with Quicken for Mac and I’ve converted all this year’s financial data (an unpleasant process). But Quicken is an ugly program on Windows; on Mac it is an ugly, difficult, counter-intuitive program.
But I hate paying $150 or more for Windows so I can use a $30 program, Money.
* Microsoft MapPoint, because it permits trip planning rather than just routing. Microsoft Access, because I haven’t figured out how to convert my existing databases (CDs, books) to a Mac program. And Wilson Turbo Texas Hold’em, because it’s smarter than the other poker programs (like iPoker for Mac), if homely.