Celtic 0
Aberdeen 1
Mackie 69
Celtic 0 Aberdeen 1 March 18 2008
Darren Mackie's 69th-minute strike against the run of play saw Aberdeen win 1-0 at Celtic in the Scottish Cup quarter-final replay at Parkhead.
After the Dons were under pressure for most of Tuesday's game, with their first attempt on goal after the break Mackie fired past Artur Boruc from 12 yards out.
Celtic had equalised late into injury time in the first game but this time the Dons held firm to set up a semi-final meeting with Queen of the South on Saturday April 12.
But Dons manager Jimmy Calderwood will wonder how his side managed to leave Parkhead with their goal intact while Celtic boss Gordon Strachan will reflect on the jeers of the Hoops fans at the final whistle.
Scott McDonald and Jan Vennegoor of Hesselink wasted the best of the home side's openings and despite late heavy pressure, Aberdeen held on for a famous win.