According to TVLine, American Horror Story:Freak Show will add How I Met Your Mother alum, Neil Patrick Harris and his husband, actor and chef, David Burtka to the cast this season. Neil Patrick Harris will appear in unnamed Season 4, Episodes 11 and 12 and David Burka will appear in the unnamed Season 4, Episode 13 the season finale. Also, making an appearance in AHS: Freak … [Read more...]