It wouldn't be the holidays without drama, and three joyously offbeat shows open this week on local stages. It's All About (Christmas) Eve when Running With Scissors reworks Showgirls into Snow Girls at Southern Rep (365 Canal St., third floor, 522-6545; www.southernrep.com). At Le Chat Noir (715 St. Charles Ave., 581-5812; www.cabaretlechatnoir.com), A.J. Allegra dons elf gear in David Sedaris' one-man show The Santaland Diaries, and Jeffrey Roberson and Ricky Graham reprise their musical Scrooge in Rouge. Call or visit theater websites for schedules and ticket information.