Hmmm, past crackpot Anti-Christs:
Anwar Sadat (actually had a warship with 666)
The Vatican (They have a computer rumoured to be called “The Beast”)
The World Wide Web (nuff said)
Computers (that whole 386+ thing)
Various world leaders as well from all spectrums.

Did I miss anything?

/Brethern churches are really wacked out over this stuff.