More often than what you're suggesting, I find people are surprised that I have an urban side to me.
If you're used to being a maverick, then people don't get surprised when you start acting strangely.
To some extent, I'm mildly surprised by every new piece, by the precise path that my interest takes.
You'd be surprised how self-conscious a lot of women are. That's something I've witnessed firsthand.
I'm always surprised at how many people seem to like reading about what hardware and software I use.
I think everyone is very surprised at how 'Matrix' has become the pop culture phenomenon that it is.