[bshimmin]

I often ask people about their editor setup too - I tend to find that the level of enthusiasm they have about their editor is a moderately good indicator of their enthusiasm in general (though not, necessarily, their competence - I think that's stretching it too far). If they give me a look as if to say, "Why on earth is he asking this?" or they reply with something like, "Oh, whatever to get the job done... what do you use?" then it doesn't suggest to me that this is a person who gets much pleasure out of programming.

The other nice thing I find about asking this is that it isn't a question they've prepared for, so you tend to get an honest answer.