"Rotoscoping" in Photoshop can be done
much faster if you create a custom script to perform the masking operation. If set up right, the only thing you'll ever have to do by hand again is define the transparency of a particular frame. Scripts also prevent your from making mistakes.
One-click masking - gotta love it. There are few things so satisfying as making your software do all the work, for once.
As far as the suggestion to use the pen tool, I concur wholeheartedly and would direct you to my upcoming tutorial...but it's not up yet. It's coming, though!
