Courier New is the standard monospace fixed width font used by programmers. If your looking to try something new, I just found a list of fonts for programmers. Right now I'm trying out Bitstream Vera Sans Mono. Here's an example:
If your using Eclipse, you can change the default font by going to Window - Preferences - General - Colors and Fonts then under Basic select Text Font, and hit the Change button.
Comments
I've always liked this one... http://www.tobias-jung.de/seekingprofont/
I like the font Andale Mono a lot! It is perfect for me!
I prefer Andale Mono at 10pt on 1600x1200. (http://mrmx.blogspot.com/2005/02/best-editor-font.html) I just wish that Dreamweaver would respect the font width with bold type. That one just baffles me.
http://proggyfonts.com/index.php?menu=download yes, proggy clean with zero slashed, totally um rawks
That's crazy, I noticed the bitstream font set and A just set it in my windows appearance settings and wednesday. It looks so much nicer with the antialiasing and all