Here's a recommended tech for you - a Mac application called Delicious Library.
I've been struggling for a few years to perfect a DVD database of my own (first using MS-Access, and lately MySQL). Making a DB of the titles was easy, but adding details like extras, episodes, and actors can be a real pain.
Delicious Library makes it ridiculously simple to enter all this data. In fact, you don't even have to touch the keyboard. Just hold the UPC symbol from the DVD box up to your webcam and the software does the rest. It recognizes the bar-code, and pulls everything you need from various web sources... amazing.
You can also print reports and publish the results to a web site.
It's not free ($40) - but the price is worth it.