How many days have you "completed" of Handmade Hero? Do you simply watch? Download the nightly source and follow along, or do you write all the code along with Casey?
I personally have written everything from scratch, using my own formatting style and naming conventions and whatnot. I've just finished day 21. I have to say, while it's much slower, it makes the code much more personal and something I can feel attached to.
Before I fell behind the stream, I felt really proud when we'd get to the end of the stream and my code was working like Casey's. Keeping up with him is no easy task.