I have quite a collection of DVDs that's unopened. Already watched the VCD, liked it a lot, so have to buy the DVD when it become available... but then it just get filed, since I already know the plot, and there are lots of other unseen DVDs, so they stay unopened...
Others like Lawrence Of Arabia, is said to be best seen on the widest possible widescreen TV, since I still don't have one, I don't want to ruin the movie, and that movie keep waiting for the Plasma that I never get to buy...
Still others are three or four hour movies (Schindler's List, Gone With the Wind, Ben Hur, etc) that I never find time to watch, don't want to watch it in two installment...
Probably a backlog of @20 DVDs (and another 20-30 VCDs), and keep growing (especially after every Mall-wide sale)...
One of the problem with DVDs here is that they are not always available, more obscure (and even some new titles) may have one release, then disappear forever from local shelves. So you are sometimes tempted to buy any title you might remotely be interested, many times, if you buy , say, 2 or 3 titles on one shopping trip, I watch one, and the other 2 get filed...