The premier company in town is the 20-year-old Charleston Ballet Theatre (477 King St., 843/723-7334, www.charlestonballet.org [1]). Its 18 full-time dancers perform a great mix of classics, modern pieces, and, of course, a yuletide Nutcracker at the Gaillard Municipal Auditorium.
Most performances are at the Sottile Theatre (44 George St., just off King) and in the Black Box Theatre at their home office on Upper King [2].
Links:
[1] http://www.charlestonballet.org
[2] http://www.moon.com/destinations/charleston-savannah/charleston/sights/upper-king-area