Readerbreeder
Explorer
I can only speak from personal experience, but for me, geekiness definitely came first -- my brother and I were creating a complete milieu with our Star Wars figures for a few years before D&D.
On a side note, does anyone else differentiate between geekiness and nerdiness? I had always thought that a person could geek out on all kinds of stuff. For example, you have car geeks, stat geeks in sports, RPG geeks, etc. Nerdiness, for me, is the stereotypical glasses-wearing, one-shirttail-out kind of guy/girl you see in the Revenge of the Nerds movies.
On a side note, does anyone else differentiate between geekiness and nerdiness? I had always thought that a person could geek out on all kinds of stuff. For example, you have car geeks, stat geeks in sports, RPG geeks, etc. Nerdiness, for me, is the stereotypical glasses-wearing, one-shirttail-out kind of guy/girl you see in the Revenge of the Nerds movies.