I prefer 8 point Courier (but I'd be willing to switch to 10 point if someone wants to contribute a larger monitor ;-), but whatever it is MUST be fixed width. Lucida Console is certainly nice looking, but I find the letters all start to look alike after 20 or 30 straight hours. Seriously, there have been studies (long ago, which I certainly can't cite), or at least I've imagined studies that have found that you want maximum variation between characters for easiest recognition. This is the reason BLOCK CAPS sucks, and I think it can be extended to Lucida/Courier debate. At least try both for a good period of time before you settle on one.

As an aside, the editor I find myself using (Notepad+ by Rogier Meurs, not in production but still available though I haven't got a URL handy) allows you to set both prefered fixed and proportional fonts, and flip between them in a flash if you are so inclined (though I'm not). This must be a feature on other editors.

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I'd like to be able to assign to an luser