Celtic 0-1 Aberdeen: Celtic's Scott McDonald (left) and Aberdeen's Scott Severin indulge in a spot of hi-karate

Celtic took the game to the Dons from the start but Karima Touzani was alert to the early threat of Shunsuke Nakamura

Dons' keeper Derek Soutar dives bravely at the feet of onrushing Celtic striker Jan Vennegoor of Hesselink

Vennegoor of Hesselink sinks to his knees and howls at the moon after another golden opportunity is squandered

Meanwhile Dons' boss Jimmy Calderwood howls from the sidelines as his pensive counterpart Gordon Strachan looks on

On the ropes for much of the tie Aberdeen hit Celtic with a classic counter-punch goal, courtesy of Darren Mackie

Mackie (10) wheels away in delight after giving resilient Aberdeen a sensational lead against the run of play

Mackie slides onto his knees to take the acclaim of the travelling Aberdeen support

Celtic throw everything but the kitchen sink at the Dons but, despite relentless pressure, can't find an equaliser

Substitute Georgios Samaras holds his head in disbelief at Celtic's shock Scottish Cup exit

St Mirren 1-3 St Johnstone: Rocco Quinn celebrates his spectacular opener with St Johnstone team-mate Gary Irvine

And Quinn is lifted shoulder high by his ecstatic team-mates after firing the Division One side into an early lead

Andy Jackson doubles St Johnstone's lead, curling the ball high past helpless St Mirren keeper Chris Smith

Incredibly, St Johnstone go 3-0 up with less than half an hour played and it's Peter MacDonald's turn (centre, 11) to be mobbed

St Mirren's Billy Mehmet sends Alan Main the wrong way from the penalty spot for what turned out to be a consolation goal