The jazz hands. The sequined costumes. The flags and poorly choreographed, unsynchronized leaps that detract from the main event. Have you ever wondered where those enthusiastic halftime performers come from? Theyre found at Boston Market, silly. If you are between the ages of twelve and twenty, you can audition for the 2007 Orange Bowl Halftime show at todays Boston Market Chance to Dance. Youll need to bring your own music and perform a choreographed or freestyle routine. Registration is at 11:30 a.m., and auditions begin at noon at Boston Market, 8070 NW 36th St., Doral. There is no fee to audition, but those selected to perform will need to pay a $90 participants fee to cover the cost of costumes, meals, and transportation. Advance registration is required. Call 305-341-4700, or visit www.orangebowl.org.