Computer-people becomes proud very easily. Every time a big chunk of code works, we brag about it. If we make a piece of software work a little faster, we can't stop showing off. Not to mention how happy we are when we do something big such as a major upgrade.
For me seeing a review written in my native language, about an open-source project I've participated in, does the trick. Actually, I left that project as I currently haven't got the time to volunteer, but I'm still very much connected to it.