That's a fun game - although the last two (I think) in the 'comma' section I felt were subjective, and an argument could be made for or against the comma, depending on the speed, rhythm and tone of voice at which the author wanted each phrase to be read. That's how I tend to think of commas outside of the usual rules - if I want the reader to pause, I insert one; if I want the words to run into one another I won't.
That's not very eloquent because I'm tired. I hope you all get what I'm trying to say.
