Buddy Rice 2004 Indy 500
I would say that Buddy is one of the most forgotten 500 winners, even amongst the IRL era. I did a recent rewatch of the 2004 race and I can't say he didn't earn it, he had the best car most of the month and was the dominant car of the race.
Would you rather back into a 500 due to rain or strategy, or win one more legit but be nearly forgotten immediately?