The other event areas are:
Rally: Chatot, Sableye, Pikachu, Croagunk, Buneary, Pachirisu
Sightseeing: Eevee, Torchic, Poliwhirl, Pelipper, Pikachu, Meowth
Amity Meadow: Elekid, Magby, Smoochum, Happiny, Cleffa, Igglybuff

I'm hoping for Amity Meadow myself. It would be nice to get an endless supply of Electrizers again, now that my FireRed is dead.