RAINDANCING  To streamline my process, I keep a finder window with my source pictures on the left, EasyCrop window in the middle, and then a finder window for my destination on the right.

My destination is usually just a new folder I've made to keep the results in so that I don't have to keep hitting 'replace'. If you need to see the pictures in your source, you can have them in icon view with sizable icons. It really goes pretty fast.  
(Version 2.4.4)

RAINDANCING  I am thrilled to death with EasyCrop. I've been creating backdrops for my old movies in Plex, and before I was importing into iPhoto, cropping there and exporting out. I thought to myself there has to be a better way-- and there is! Now I just keep the constraints set at 16:9, drag in, adjust, drag off. It's perfect for what I need. The only things I want to do are crop, sometimes flip, and occasionally desaturate, all of which EasyCrop does.  
(Version 2.4.4)

RAINDANCING  This tiny app is full of awesomeness! I love it when things just work. Looks at the filename and pulls the data.

Admittedly, it will have less of an impact on my life now that I'm using Plex instead of FrontRow, but I can't let that affect my rating. :)

Four stars, because there is still room to grow (a progress bar would be nice, for starters).  
(Version 20090202)