A lot of people remember where they were when they first saw Cristiano Ronaldo play.
That's definitely true of his former Manchester United team-mate Ryan Giggs, who has recalled the moment he first saw CR7 in that famous Sporting Lisbon friendly - the day when Sir Alex Ferguson decided to sign him up.
It was a day that changed football, and Giggs has made it clear that everyone could tell back then that Ronaldo would go on to become a special player.
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"He just lit up the game, all the lads were talking to him after the game and I remember we were waiting on the coach and everybody was wondering what we were waiting for", he said, as per the Mirror.
"And then we just got a little whisper that the deal was being done for £13million."
Ferguson was reluctant to leave the stadium until the deal was done, and it was probably one of the best decisions he ever made.
Ronaldo left for Real Madrid in 2009, but he had already secured his place in United history by then.
Having arrived as an unknown from Lisbon, it was Old Trafford where he made his name, adding a haul of medals to his cabinet in the process - so it's no wonder Giggs holds his first memories of Ronaldo dear.
And now he's a European Championship winner too.
What's your favourite Ronaldo memory? Have your say in the comments.