Outkast is great. They had appealing beats, and the two emcees had a very good contrast to them. Big Boi has that crazy flow and lyrics, and Andre 3000 was unique as fuck, and had moving lyrics. Both really good together, in my opinion.
One of my favorite duos of all time. Every studio album released had its moments. Favorite songs.. ATLiens Wheelz of Steel Benz or Beamer Jazzy Belle B.O.B.(Bombs over Baghdad) Ms. Jackson So Fresh So Clean The Way You Move (killer bass line)