Fun game! Here are mine:
Hamilton - Fuji 2007. There are obviously an awful lot to choose from but this was pretty special, probably even moreso than Silverstone '08 because of the context - LH was in his rookie season and I think the only driver who didn't make a mistake all day, even as his illustrious teammate his the wall behind him. He looked like a guy who'd been driving for years.
Bottas - Melbourne 2019. Most of his wins have been pretty close but here and in Austin he had a clear pace advantage over the field. I went for Melbourne because I think Hamilton was driving for the title in Austin. In Melbourne Bottas pulverised the opposition. "To whom it may concern, **** you" was a great radio message as well.
Vettel - Monza 2008. It's easy to go for the spectacular surprise rather than the routine wins and probably some of Vettel's Red Bull and Ferrari drives were better - Singapore 2013 and Bahrain 2017 spring to mind, But I went for this because it was seriously impressive. Actually driving away from Kovalainen's Mclaren... I couldn't really believe what I was seeing at the time.
Leclerc - Bahrain 2019. Hard to choose between this and Monza, but I went for Bahrain as it was a really dominant performance spoiled in the end by a technical issue. Overtaking and driving away from Vettel in only his second race for Ferrari was a real watershed moment.
Verstappen - Austria 2019. It's amazing there are already so many to choose from, including his fantastic performance in Brazil in 2016, but I went for Austria as he did make one small mistake in Brazil that cost him a chance of a win. But Austria was brilliant - relentless pace, fantastic overtakes. His remorseless, merciless rise through the field reminded me of some of Michael Schumache's drives in the early 2000s. High praise from a big Schumacher stan like me.
Albon - Brazil 2019. There aren't too many to choose from, of course, and since his promotion to Red Bull he's generally been pretty far off Verstappen's pace. That was the case in Brazil, too, but it was the first time we've seen him mixing it at the front and he pulled off a superb overtake on Vettel at the SC restart. Really deserved a podium that day.
Sainz - Hungary 2019. I think he was driving better last season than at any prior point in his career, in a stealthy sort of way. There were a few to choose from but I went for one where he managed to keep Gasly behind him to the flag, on this occasion being rewarded with an excellent 5th place.
Norris - USA 2019. Not too many to choose from, but here he beat Sainz fair and square. Wasn't paying too much attention to him last year if I'm honest.
Ricciardo - Belgium 2014 - this may be a slightly left-field choice but I was really impressed with the way in which he matched Rosberg's pace at the end of this race. The Mercedes was overwhelmingly superior and Ricciardo's pace was very impressive. I also really liked China 2018. probably my favourite barnstorming Ricciardo drive.
Ocon - Monza 2017 - qualified third on the grid and a strong run in the points. I think he's very fast so I'm looking forward to seeing more of the same this year.
Gasly - Bahrain 2018. Very impressive - qualified fifth, finished fourth. His teammate was nowhere near the pace so I think this has to rank as Gasly's best performance so far, moreso than his slightly fortuitous podium last year.
Kvyat - Mexico 2015. I found this one very tricky. Picked this race because he beat Ricciardo in both qualifying and the race, but there were several that I could have gone for instead. I He looked quicker in Austin this year as well before he crashed.
Raikkonen - Belgium 2004. OK, I really picked this to be a contrarian because Suzuka 2005 was amazing, but I think this one is overlooked as he didn't really have the car to win that day and yet climbed from tenth on the grid to do so. The Mclaren was (mostly) uncompetitive that year so I was really impressed with this one.
Giovinazzi - Brazil 2019 - Probably the highlight of a largely unimpressive debut season, he kept his nose clean and did well to bring it home in fifth.
Perez - Malaysia 2012. He should have won this race hands down, he blew it with a crucial error. But it was still a very strong performance and the pace he showed was extremely impressive. He's turned up on the podium on several unlikely occasions over the years so there are quite a few good performances to choose from.
Stroll - Azerbaijan 2017. I think it has to be this one because he drove well, beat his teammate and kept his nose clean. I did think of Hockenheim last year where an inspired tyre choice put him briefly into the lead, but I do think he could and should have finished on the podium in that race. So Baku it is.
Grosjean - Valencia 2012. I genuinely think he would have won this race if the car hadn't broke. Quickest man in the field after Vettel dropped out and closing in on Alonso before the car broke. Desperately unlucky.
Magnussen - Australia 2014. Had to go with this one I think. He beat Button and managed an excellent second place on his debut. Sadly I don't think he's hit those heights since.
Russell - Brazil 2019. Really hard as I confess I wasn't paying a lot of attention. Went for this one solely because it was his best result.
Latifi - 2020 Virtual Monaco GP (I'm joking). Looking forward to seeing his debut in Austria.
I think it's easy to remember spectacular or breakthrough performances over more routine wins. Probably, for example, some of Hamilton's dominant performances for Merc were just as good as Fuji '07, but because he was dominant they're not memorable. Whatever, that's my list.