Well that was surprisingly casual for the Big Fella: with a brief tweet, video and hashtag saying #ShaqRetires, Shaquille O'Neal is apparently exiting the NBA. The iconic center dominated the league with the Orlando Magic, won three championships in a row with the Los Angeles Lakers and brought the Miami Heat its first franchise title. In the video embedded below, he simply smiles and says, "We did it, 19 years...that's why I'm telling you first, I'm about to retire." If  there's a press conference soon, we can only guess his one professional regret: letting his rival Kobe Bryant nab one more title than he did.