The last company I worked with had legal copies of everything, even Windows and Office (which _everyone_ pirates). They were using Linux on a bunch of machines, though, so license compliance on those is kind of a given.
I do tech support for a local church (sort of a volunteer thing), and they warez everything except for one piece of software (a poorly-written VB / Access app that contains their membership database). They have a warez copy of 2000 datacenter server and Citrix Metaframe XP on a central server (wonder how that got there, considering that I set it up for them? 🙂 ). They can't exactly afford to pay for the software, though, so I don't hold it against them.
Personally, my philosophy is that if I use the software to make money, I'll buy it. Otherwise, I usually download it. One of the reasons that I do this is that the cost of buying every app that I used a few times and uninstalled because of { poor UI design | missing features | crashy | doesn't do what I need it to do } would approximate the GDP of a small Slavic nation. When I do look into buying software, I try to go for the educational version, as I'm a college student and don't have much disposable income (Example: Maya 5 Unlimited, which I currently use, is $5999 per seat retail, $899 educational. Pixar's Renderman Artist Tools (PRman, MTOR [Maya to Renderman], slim, it, alfred, irma) is $2000 per seat retail, $500 educational).