If you're going to see just one dance performance while you're in town, make it a Hubbard Street one. Chicago's best-known dance troupe mixes jazz, modern, ballet, and theater dance into an exhilarating experience. Sometimes whimsical, sometimes romantic, the crowd-pleasing ensemble incorporates a range of dance traditions, from Kevin O'Day to Twyla Tharp (who has choreographed pieces exclusively for Hubbard Street). Although the troupe spends most of the year touring, it has regular week-long Chicago engagements in the fall, winter, and spring. In the summer, the dancers often perform at Ravinia, the Chicago Symphony Orchestra's lovely outdoor pavilion in suburban Highland Park.