Fonts fonts fonts!

A good font has a great effect on writing code. First, don't bother with one that isn't monospaced. Second, it should be simple (probably sans-serif). Third, it should be tight, so you don't waste screen real estate. My favorites are Monaco (a standard Mac font), and fixed 6x13 (a standard X11 font). In general, I have never been a fan of Windows fonts. They all seem the same, and none of them are particularly appealing. My recommendation is to fill up your Windows\Fonts folder with conversions from other operating systems.

Some Mac fonts, available as TrueType.
Another blogger, looking for good coding fonts