Although I was surprised at Lancelot's apparent demise, especially because the show usually does the reset button thing within the episode, I was never too worried. I expect they'll find a way to bring him back for more angst in the Arthur/Gwen/Lancelot triangle department. But until then, I'll certainly miss seeing Lancelot and the fact that finally there was someone (besides Gaius) who knew about Merlin's magic.