I use a combination of DVDLobby PPC, a 200 disc Sony DVD Changer and USB-UIRT to manage my collection. It works really well, I use my PPC (o2 XDAIIi) to browse the collection tap the screen when I find the film I want and the software does the rest. Very Neat.

I can see how having the whole collection on HD would be good, as I would like to select my own trailers to be shown first (ie downloads from quicktime site) and then skip the menus and just play the film. But this current solution allows me to hide away all those ugly DVD boxes, while also removing the need to flip through 100's of discs finding the one I want. You can pick up older changers like my 850D pretty cheap on eBay now, may be worth a look.

Cheers

Cris.