* BlackSheepHit: Most people who heard "Hey Ya!" don't even know [=OutKast=] are a rap group.
** This troper found that, upon playing ''Aquemeni'' to his cousin, that she (for one) was under the impression (thanks to the mass worldwide success of "Hey Ya!") that [=OutKast=] was one man (Andre 3000) who sung pop and jazz-influenced Motown songs. There was considerable surprise for her upon hearing "Return of the Gangsta", "Rosa Parks" etc.
* ExecutiveMeddling: After their previous label, [=LaFace=] was bought by Jive Records, [=OutKast=] had numerous clashes and creative differences, that ultimately led to Big Boi releasing his solo album with another label.
* HeyItsThatVoice: CeeLoGreen guests on many of their songs. This was before he became known as part of Gnarls Barkley or for his own solo work.
* NamesTheSame: Andre 3000 was originally known as just "Dre". He changed it to avoid confusion with Dr. Dre.