If season eight’s first two episodes of It’s Always Sunny in Philadelphia are any indication of what’s to come, we are in for some of the funniest and most irreverent treatments of serious topics I’ve ever seen. As usual, Sunny wastes no time getting to the characters’ inappropriateness and political incorrectness. As “Pop Pop: The Final Solution” opens, Dennis (Glenn Howerton) and Sweet Dee (Kaitlin Olson) have to decide whether to pull the plug on their ailing Nazi “Pop Pop” (Tom Bower), while the rest of The Gang go in search of the Nazi treasure Pop Pop brought home from the war.