Rice Social Dance Society (at Rice University) is offering Lessons in Swing, Salsa and Ballroom this semester. Classes start this week, and registration is open this week and next (so if you miss this week, you can still stop by and check out the classes next week. Classes are on Tuesday and Wednesday evening. For full details about schedule, pricing and the class levels check out
These classes are fun - I've taken most of them at one time or another and I was a member of RSDS all while I attended grad. school at Rice :). The schedule is updated regularly, and classes are usually offered throughout the school year, and sometimes in the summer.