I was in the habit of religiously throwing them out (Last Waltz and Total Recall come to mind). But now, I'm on the fence... So far I'm holding on to the BTTF and Dances with Wolves SE slipcases. What really made me reconsider is the amazing slipcase included with Die Another Day. WOW, they even used clear tape that can be removed without destroying the slipcase. Might be a keeper. What do you think?