My 2 year old 250GB iMac core duo came with 50GB of HD space already spoken for. Now I'm down to the last 40GB but still have 50 movies to rip. I use it for movies, photos, music and mostly word based work, spreadsheets diaries etc. I know there's all sorts of techy stuff in there I'll never need. So what can I SAFELY delete to create more space for ripped DVDs? eg don't need multiple languages, drivers, help files etc. Why do I still have System 9? I'm hoping to dump maybe 20GB+ of useless stuff to make more room for movies... Any obvious candidates?