Since you've bumped the thread, I'd just like to say that
Personal Video Database has been upgraded some time back and is even better than before. The biggest improvement made was to the search, which was already very strong.
I've got well over 400 movies entered into the database now (it was 100+ movies when I reviewed it) and the program is as responsive as ever. I found the Collectorz interface more polished & comprehensive but much slower in comparison when I tried their latest version (very briefly) a couple of weeks back - I'm referring to the movie edit box in particular which took ages to load.
I've also started using the People category in PVD (see screenshots), this is a feature most movie database programs lack. It doesn't have barcode scanning so that may be a deal breaker for some of you.
Screenshots:
The People section has three views just like the Movies section.
People Section: Grid view (narrowing down the people shown based on search criteria, in this case, a movie name. The columns are customizable.)
People Section: Plain view (the search is still filtered on movie name, notice the web search box [top, right]. The websites are completely customizable, for instance Rotten Tomatoes has been added by me.)

I use PVD almost daily and it has _never_ crashed on me. It's still far from being a 100% polished app but if barcode scanning is not a priority it's definitely worth a shot. I've been making a list of possible bugs & suggestions but haven't found the time to compile it all and get in touch with the author, hopefully soon.