I came across a perfect example of this tonight. I was practicing a Chopin nocturne (whichever one it was escapes me unfortunately - I was flipping through the pages and just stopped on it) and near the end there are very fast scale passages ascending and descending in the right hand. Didn't even have to think about the notes once I saw the pattern - just had to look at where it peaked and where it ended!
Ha! it's definitely Chopin nocturne in C sharp minor.