Just your save files really.
Make sure you 'deactivate' your account in account management on your 60gb before wiping it clean otherwise you'll lose one of your 5 system activation limits.
Probably trading for a slim in next few days too.
I've read all this stuff about Fat32? I'm not bothered about music and photos I have saved as I now use the media streaming from PC.
My external HD already has loads of stuff on it so I'm not going to format it to Fat32!
If I just copy game saves and any game data, can I just chuck that on my "non Fat32" external HD and then xfer back to new slim PS3?
I'll redownload any demos I want as I hardly touch them anyway. I presume I just log in as my existing accounts to be able to access already downloaded stuff?
I then De-activate and format drive before it goes back?
Sorry for being thick but if anybody can answer some of my queries I'd be very grateful.
Cheers!