When I shot my best round ever, +2 total. Started double, bogey, bogey, then played the rest of the round in -2.
This was last summer, not sure I'll ever be able to put so many sub 80 rounds together again.
Playing on my home course, we started playing and it had just started to lightly rain and continued during the first 9 holes. I shot a 30 (-6) on the top 9. After we finished putting it began to pour and lightning. So I never got to finish the entire round, but still my best 9 holes I have ever played.