Pirating music and the occaisonal movie and in very rare occaisons (very very rare, if its your only choice, or the only alternative is paying £200 for a copy of this ultra rare game) games.
The way I see it, producers make too much money off artists, and artists don't need the revenue. If they made money from gigs alone they'd still come off, better than most of us, the rest is just greedy and could go to better us. CDs are extortion and not alot for your money. A 13 track (ish) beatles album can set up back £22 at HMV. It's horribly overpriced for a few minutes of audio. It's not as though creating music is like mining plutonium with your bare hands, many people do it for fun. So torrenting music simply feels like leveling the playing field, if I bought music I feel I'd be being cheated. Saying that I've bought a few vinyls and reasonably priced album. I got Thriller for 50p (Vinyl) =)
Movies take more effort to make, so I implore people to buy them as often as possible, but the occaisonal movie isn't going to sink the industry. Despite what those adverts say.
Games take hundreds of man hours, dedicated designers, programmers, artists, modellers etc... they deserve the money more than most media. To create the games of today is nothing like the games of only 10 years ago, games now are so complex and beautiful the effort to make one is extrodinary and bedroom devs creating blockbuster titles is sadly a thing of myth now. So kudos to devs, etc...