They sang ABBA and Kate Bush songs together
Coldplay's stint at Wembley Stadium has seen them bring various guests out - some of them more surprising than others.
Last weekend, for example, saw Chris Martin and co. covering Louis Theroux's 'Jiggle Jiggle' and bringing Craig David on stage for a couple of tunes.
They trumped themselves, however, at their London gig on Saturday night when they brought the one and only Alan Partridge out.
Actor Steve Coogan made an appearance as his most famous comedic alter-ego, joining the band for a rendition of ABBA's 'Knowing Me, Knowing You', as well as Kate Bush's 'Running Up That Hill' - which he had famously sung as part of a Kate Bush medley for Comic Relief in 1999.
Most brilliantly, though, he was wearing a red satin jacket with 'Snow Patrol' written on the back.
He said to the crowd: "Running up hills, up roads – it’s all cardiovascular. Not sure about running up buildings, unless you’re Spider-Man – excellent humour!" before addressing Martin. "Chris," he said, "what do you think the song’s about, because it can’t just be about running?"
Martin replied that it was about overcoming problems, to which he replied: "It’s a metaphor, got it.”
He finished the song by saying "If you're running up a hill, make sure you wear the correct footwear. Good night and a-haaaa!"
Watch it below: