GCfilms

I've been working to organize my movie collection on this Ubuntu computer. I'm a big fan of nice GUIs, and found a pretty good one for organizing any film/TV collection. It's called GCfilms. It has an entry in the Ubuntu repository, so installing it is a cinch through Synaptic. Here's a screenshot from their homepage:

GCfilms Homepage
GCfilms can even launch the video file you have linked from it in your favorite media player. It is default set to mplayer, so if you're using a GNOME desktop like Ubuntu - you might want to change that to gmplayer. Gmplayer is mplayer with a nicely done GUI, enabling you to change preferences of the video you're viewing on the fly.