Mac the Ripper - DVD ripper (quality name)
Avide Mux 2 - Editing and saving video (works with files ripped direct from DVD)
ffmpegX - another video editing tool and also converts to different audio formats (will say it's only a trial but it has yet to run out on me)
Gimp - Image editor (doesn't work very well with PNGs)
iResizer - Mass image resizing in various formats
Name Mangler - On mass renaming tool
InstantShot! - Best screen grabbing software I have found
Just Looking - Alternative to viewer - allows similar controls to windows when looking at a folder of images
I personally find VLC extremely annoying on my Mac. I have managed on the whole to get away without using it
