I can't stand proportional fonts for programming. Aside from it being harder for me to read, inability to use any sort of ASCII art, etc, it just feels sacrilegious.<p>Not to mention my editor of choice (TextMate) fails horribly with proportional fonts.<p>But then again, I used to feel the same way about anti-aliased programming fonts, and have since switched.<p>Currently Inconsolata 16pt anti-aliased is my font of choice. It helps to have a big screen...