I'm always looking for a good monospaced programmers font. There's lots out there to choose from. Some strongly prefer bitmapped fonts with no hinting. Personally I REALLY prefer heavy antialiasing with the a smooth, almost blurry (not pixelly) feel. Here's some I've used, but I'm currently leaning away from my previous favorite, Consolas, and using Inconsolata that Tomas turned me on to.
I think (hope) we can all agree that Courier New isn't where it's at. And yes, I run at 14 or 15 point all the time.
(I realize that these are huge in width and that they will goof up my site's horizontal scroll bar for a week or so, forgive me, they looked lousy when thumbnailed.)
Inconsolata - my current monospaced font, and the most Mac-like you can get on Windows (including Monaco, IMHO)
Bitstream Vera Sans Mono
Consolas (included with Vista and Office 2007)
Scott Hanselman is a former professor, former Chief Architect in finance, now speaker, consultant, father, diabetic, and Microsoft employee. I am a failed stand-up comic, a cornrower, and a book author.
Disclaimer: The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.