It's not just last names that sometimes confuse me.
Earlier today, Sam came home from the comic book store, having finally used a gift certificate I gave him some months ago. As he was showing me one of his buys, he mentioned that it was by Joss Whedon. It's a good thing he explained that he's the creator of "Buffy the Vampire Slayer," because I was sitting here thinking, that British singer that did Gap ads also does graphic novels?