Meaghan, an ex-coworker of mine, is a big advocate of the Hula Girl widget for OS X's Dashboard. She's been passing information to me about it for almost two months now, through mutual friends! Now at version 3.0, the Dashboard Hula Girl widget gives you a choice of Hula Girl, Hula Boy, Hula Jesus, or Hula Homer(Simpson) and five different backgrounds. It's a free download.
Link to Apple's Dashboard hula girl | Thanks Meg!
For the Windows user (or Mac OS person who just likes it better) there's a different Hula Girl widget for use with Yahoo! Widgets. This animated hula girl swings and sways alluringly. It's also free.
Link to Yahoo! Widget's hula girl
By the way, if you ever find yourself in need of an optometrist in Key West, be sure to visit Meg's father-in-law, Dr. Otto.