I do, though the degree to which I pay attention to them varies. If there are scenes that carry over into the credits, or even if there are background images, then I'll generally pay attention to the credits. Honestly, for movies, I just do a quick Google search when the credits begin to see whether there's anything of interest during or after the credits, as I don't want to miss anything but also don't want to waste time waiting for nothing. I wish that was nearly as convenient to do for game credits.