Hot on the heels of the new Jennifer Lopez Greatest Hits album (Dance Again... The Hits), we have news that Britney Spears is ALSO releasing a greatest hits album (Oops! I Did It Again: The Best Of Britney Spears) which is set to hit stores later this month. It's actually Britney's THIRD greatest hits album, if you're scoring along at home. Yes, Britney has had so many hits, she's had to release THREE different greatest hits albums. Here's her first hit, from 1998...