The dog lying on the bright red doghouse when George Michael was schlumping along all depressed about Ann dumping him was absolutely priceless. I think it would have been better if they hadn't given a zillion other characters their Charlie Brown moment as well, but whatever. Brilliant episode.
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Research-wise, I am somewhat frustrated at the princeton LF suite, since it really ought to be a good test case for my code, except that it uses constraint domains, which I don't know how to handle.