We've had various requests for a crossover or fusion challenge, but
losyark came up with the best, most exciting formulation, IMO, because it includes: "Crossovers, AUs, ARs, Fusions, and Meta! In any and all combinations!" She says: Maybe the real Doc Brown accidentally punches through not only space, but realities, and Team Shep has to get him back to his own ("wrong wrong, the physics are all WRONG!") reality before McKay blows a gasket; maybe a weird ancient device makes Doctor Who step out of the television set, or sucks our intreped heroes INTO it; John and Rodney end up in a world where everyone keeps calling them Joe and David; Teyla's favourite bedtime story come to life; Ronon is secretly the Batman; Elizabeth Weir was once vampire, or Rodney's real name is Grant; Carson has a cousin who's an actor on a cheesey scifi soap...
Today is Feb 1; stories will be due Feb 14th at midnight eastern, or thereabouts afterward. *g*