Recently, I’ve found an interesting post, where top 10 programming fonts are being compared. Every font is accompanied with comments and image of font in action. For example, one of my favorite ones, DejaVu Sans Mono looks like that:
Another one, which I also like and which is used in Android OS, is Droid Sans Mono:
The whole story is here. Hope you find there your new favorite programming font instead of boring Courier new and Consolas.