Excellent work, very good proof of liberal bias at the NYT. This ought to be read by everyone at FR and cited by conservative columnists!
The second part I've promised will take a bit longer, I'll probably have it up in two to three weeks, it looks at how they label (and fail to label!) interest groups like Hertige and Emily's List, etc.
I did a lot of research on it before, but I forgot the methods I used, so the data is basically worthless.