Ever wondered what would happen if the fandoms of Harry Potter and Stranger Things collided? Wonder no more. As if it wasn't enough to see Eleven and Neville Longbottom geeking out together, this Halloween, Comedy Central UK has created the geek mashup to end all geek mashups, bringing the two together in a mock trailer that blends the worlds of Hogwarts and '80s small town Indiana. Ron's freaked out by Eleven, Snape (apparently) has a personal stash of Eggo waffles, and the Vale of Shadows looks eerily like a Pensieve to us. Trust us, this is worth a watch!