5. It was the first hip-hop album to ever win "Best Album of the Year" at the Grammy's.
This is significant for so many reasons. First, it demonstrates that the forever-scrutinized hip-hop is a serious form of music. Any rap fan knows how annoying it is to hear someone say that rap isn't really music, when, in actuality, there is more creativity and meaning in the beats and lyrics of legit rap than any other genre of music, hands down.
4. It sold more copies the week it was released than any other CD, beating out Dave Matthews.
And we all know how crazy DMB fans are. (I have a few in my family, I can attest.) This showed all the haters that hip-hop was a profitable industry, and encouraged people to start investing in it.
3. It incorporated so many different types of music.
Andre 3000 has this soulful, jazzy sound, while Big Boi is a straight-up southern rapper, but the two contrasting styles compliment each other perfectly. Hearing different styles of music throughout an album insures that you'll never get bored of it.
2. It had that "Inception" swag- an album within an album.
Unlike anything that was coming out at the time, "Speakerboxxx/The Love Below" was actually two solo albums in one album, with "Speakerboxxx" consisting of Big Boi's jams and "The Love Below" consisting of Andre's. But each of them did features on the other's album.
1. Because you will never stop hearing "Hey Ya"
This song was the shit when it came out, and it still very much is. And this song is unlike any other song in hip-hop. Everything about that song was so memorable, even the old school music video that I will never not think of when I hear this song.