What about Per's last bend pass of Jimmy Nilsen in 1990. A classic Jonsson swoop, and you knew from that moment he was going to win it.
Maybe not classic races for quality, but in terms of significance/memorability:
Peter Collins hits a wet patch on the outside in 1975 after the fans had watered the track.
Not sure the exact year, but Hans Nielsen gates on Erik Gundersen, decides to take him out wide. Gundersen hangs on to take the lead and Kelly Moran cuts under Nielsen into second place.