I'd love to be able to see all the questions and answers that I've voted on -- perhaps search among them. (Or even search among all questions I've viewed before, but I don't know if that data is actually stored.)
I think there are a lot of interesting things you could do with that information, such as seeing which users or tags you vote for the most. I'd also like to see what fraction of my votes are on questions vs on answers, how many answers I vote on when I vote, etc.
Is the above possible in theory using the creative-commons-licensed data dumps from StackOverflow? How about in practice? Has anyone found a way to get this data on themselves?