There’s a touch of Richard Linklater, he of the ambulatory two-handers, and also of Jem Cohen, whose Museum Hours asked similar questions about our relationship to art and history, in these digressive discussions.
Finally, Billy Ray Cyrus (2009's " Hannah Montana: The Movie ") and George Lopez (2008's " Henry Poole Is Here ") cash paychecks as Bob's spy associates; it's hard to believe either one took these thankless roles because they were drawn to the characters.