People like myself at Dell were NOT given the chance to go back and claim personal possessions, save personal files, or get access to personal email archives. Once you were walked out the door the rest was shipped to you, and if they missed anything that really was yours, too bad - it ended up in the garbage. I had to throw a lawyer's name around and go over the heads of my ex-manager and the HR person who shafted me to reclaim technical books that the vultures picked out of the garbage can. All my emails, email addresses, bookmark lists, paperwork, etc., were lost forever.
What I learned from this is to never have anything personal at my place of employment that I don't want to lose. Whenever I find a neat URL, I write it down and take it home that day. Large files I email to my Yahoo account ASAP.
Yeah, I'm still a bit bitter, but I learned a lesson that I needed to, although much more painfully then I would have preferred.