Playing investment advisor
I helped one of the younger gals at my work set up her 401(k) and felt pretty good about it. She had a TON of questions and I was actually surprised by the fact that I knew the answer to almost all of them. If I didn't have the answer right there and then, at least I knew where to look for it! After a while, other people overheard our conversation and started to crowd around, which led to a lively discussion about investing and retiring.
I guess its kind of nerdy, but it felt good to help others with their financial future.