Ehhh, I do the same thing all the time - I'll mix up folks' LJ names (but they have the same person in their icon, honest!) or say one video game company when I mean another. And after all, Spielberg and Lucas did work together on Indiana Jones.

(And funnily enough when I went to IMDb to double-check that, the main page poll question of the day was "Spielberg or Lucas?" See, you're not the only one who associates them!)