I think I'm going to subscribe just to say thanks for all his previous efforts.
The amazing thing about RailsCasts are how great they are at helping developers through sticking points. I can't count the number of times that I've gone straight to RailsCasts and looked for a tutorial on a particular gem or how to accomplish a certain task (nested forms, multiple edit, etc). It sure beats the alternative of Googling and Stack Overflowing for 2-3x the time.