"What's my age again?"

That's the first thing popping into every music's fan's head when they realize that the breakthrough album for Blink-182Enema of the State, is 15-years-old.

The band's third album was released on June 1, 1999.  Led by the crossover success of songs like What's My Age Again? the album went on to sell 15 million copies worldwide.

Enema of the State was the first Blink-182 album to feature drummer Travis Barker.  Barker joined bassist Mark Hoppus and guitarist Tom DeLonge.  That trio remains the band's current lineup.

Jerry Finn produced the album.  He's also known for producing the breakthrough album of another pop-punk band.  Finn produced Green Day's 1994 album, Dookie.

The album's cover is one of the most memorable of the past two decades.  It features porn-star Janine Lindermulder in a nurse's uniform.  She also makes an appearance in the video for What's My Age Again?  That video received a lot of MTV attention.  That's the one in which the band members streak throughout the entire clip.