(JUMPROPE) The gals of On the Double (dutch) have a Halloween treat for you: They'll be teaming up with "World Champion" jumproper (and former Cirque du Soleil coach) Rene Bibaud, and Miss H. Hula Hoop for an afternoon of performances and rope-twirling-and-jumping lessons. Bring your costumes, and break into your candy stash early—you'll need plenty of fuel to keep up with these jumpy ladies. (Miller Community Center, 330 19th Ave E. 3 pm, $5, all ages.) AMY JENNIGES