Waters, Gilmour & Mason Back On Stage Together Again At London's O2

David Gilmour and Nick Mason joined Roger Waters on stage at the O2 Arena during his performance of  "The Wall" last night.

Gilmour played "Comfortably Numb" with Waters, while both he and Mason appeared for "Outside The Wall".

However, this is not a signal for a full-blown Floyd re-formation as Gilmour subsequently posted on his website... 

“I should also remind you that tonight is most definitely a one-off; David is not repeating his special guest performance at a later occasion, I’m sorry to disappoint those of you with fingers crossed and tickets for later shows.”

http://www.pinkfloyd.com/