Facebook's Doppelgänger Week has inspired me to devise a few variants that have less to do with vanity and/or celebrity worship. So instead of Doppelgänger Week, here are five viable alternatives:
~Change your profile picture to an image of Lucille Bluth: Doppel-Gangy Week
~Change your image to Vampire Willow or Vampire Xander: Doppelgangland Week.
~Post a series of letters in your status that might be rearranged to form other words: Doppelganagram Week (or alternately, Boggleganger Week).
~Update your status with a sequence of your favorite medical conditions: Doppelgangrene Week.
~Over increasingly small increments of time, subject your friends to water-torture-like update frequencies: Dropletganger Week.