SPOILER ALERT: This story contains details about “ Scary Movie 6,” now in theaters. Carmen Electra is back for more “Scary Movie.” The actress returns to the franchise’s sixth installment after appearing in the first film’s now iconic opening scene that spoofed Drew Barrymore in the original “Scream.” Electra later appeared in “Scary Movie 4,” one of the three films that Marlon and Shawn Wayans were not involved with after Harvey and Bob Weinstein pushed them out of the franchise in 2001. “I’m