www.archive.org - type in a site that no longer exists and it'll show you lots of the old content that used to be there.
For several years, they've been
archiving the net! (Lotsa terrabytes!)
Someone on a WipEout board I visit found the old Pysgnosis site there, and I managed to grab lots of WipEout images off it. I tried typing in 'www.oddworld.com' hoping to find some of the old info, but to no avail.