Near the start, when Walter fell trying to get the fly, I thought he was seriously injured and that it would be a major plot point. Gotta admit, it was way too nasty a fall for a 50-year-old cancer patient to just get up from.
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Yoblazer: http://i33.tinypic.com/ml36gl_th.gif
Watch and you'll see... someday I'll be... part of your world!