Not sure when you're heading down there, jmvdesign, but I scored a return-trip through a quick search on the ITA Software Matrix, booked through Continental Airlines for a flight, co-shared and direct on Air Canada's E90 (my favourite short-haul plane!) for $307.50 (CDN) with all taxes said and done. My date range is September 28 to October 2.
SkinnyPupp: If there's something you're looking for in particular, please let me know so when I head down there, I can ask my cousins where they like to go clubbing etc.