Inconsolata, monospace bliss.
One of the programming social media sites I browse (either Reddit or Dzone, I can’t remember), had a link to a new font called Inconsolata. I haven’t switched programming fonts in quite a while, after dumping ProFont for Monaco again some months ago, but I’m giving this new font a try. I have to say, it feels really nice.

October 8th, 2007 at 12:48 pm
I like the font as well. I had been using Andale Mono, but now I am giving this one a whirl.
February 25th, 2008 at 4:11 am
One thing I don't like about Inconsolata is that it is difficult to tell the difference between O & 0 (the capital letter and the number zero), as well as l, I, and 1 (lower case L, uppercase i, and the number one). Perhaps "difficult" is too strong a word, but for coding, I prefer a font that is really in-your-face about those characters. However, what I DO like about Inconsolata is that it's open source. I downloaded a font-editing tool called Font Forge and modified the offending glyphs to my liking, and now I'm in programmer heaven.
March 7th, 2008 at 12:50 am
+1 Andale Mono refugee here. Thanks for the tip.
March 23rd, 2009 at 11:57 pm
It is very easy to tell the difference between O and 0; l, I and 1. Maybe you're using an older version.
February 28th, 2010 at 5:58 am
Realy? , the 0 (zero) is slashed. How you can't distinguish it?
Anyways i spend the last 6-7 hours searching/testing various fonts for programming purposes. I taste ProFont AnonymousPro ProggyClean (and the variations) etc
I settled (at least for now) to Inconsolata. The only thing that i didn't liked about Incosolata is that it needs anti-aliasing to look fine and it is kind of Windowsish.