I use Delicious Library. Fantastic. My favourite feature is the spotlight-like search, and the fact that I can "Check out" movies when family members borrow them so I know who has what.
I demoed Movie Collector and it was...ok. Then after I did some additional searching, I found this post. I demoed Delicious Library 2 and all I can say is WOW! So much more intuitive. I tried it with my modified Cue Cat and it was flawless. I scanned a few DVDs, a CD, and a very obscure book. Then I read about the company that operates in a cyber cafe in Seattle and i bought the license.