http://tags.gawker.com/assets/base/img/thumbs140x140/gawker.com.png http://gawker.com/tag/defamer/andygriffith http://gawker.com/tag/defamer/andygriffith Today we offer a new pair of videos as an addendum to our recent, authoritative list of Dos and Donts for Making the Perfect Celebrity PSA. First up: Absolutely DO coax Ron Howard and Henry Winkler into whatever outlandish pro-Obama Happy Days reprise they can stand, such as the one after the jump that premiered today at Funny or Die. And if Andy Griffith agrees to join Howard for a bewigged ride all the way back to Mayberry, all the better. However: DO NOT, under any circumstances, enlist Rhea Perlman, Valerie Harper and/or Garry Freaking Marshall as your elder voice of reason. Especially Marshall! This election is just too close — and Georgia Rule far too recent — to risk some new, William Ayers-like smear campaign this late in the game.

• Ron Howard's Call to Action [Funny or Die]

• Old-Time Celebs Launch Ads For Obama [HuffPo]

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