The Backstreet Boys and the Spice Girls were on nearly everyone's 90's playlist and rumor has it they could be coming back... together. According to a video report by Cosmopolitan, the Backstreet Boys are really hopeful that they can work out an arrangement that would see them on a worldwide tour with the broken up British girl group. Despite multiple reports that this would never happen, fans are still clinging on to the possibility -- and it so are some members of BSB apparently (cough, cough Brian Littrell).
Naturally the Spice Girls have tinkered with the idea of getting back together -- anyone remember the London Summer Olympics?! However, there is one member of the group that doesn't want any part of it -- and that's Victoria Beckham. Posh Spice has said that she has zero interest in getting the band back together (not that they are a band... but just roll with it).
Regardless, thousands of fans (who may or may not be middle-aged now) would crash Ticketmaster.com if these two groups decided to tour together. It would be epic.