Supernatural (TV series)/Recap/S01/E17 Hell House

Season 1, Episode 17:

Hell House
The brothers get a tip about a haunted house from a website run by amateur paranormal investigators Ed and Harry, but when they investigate, they realise that the supernatural creature described on the website isn't real but has been brought into being by the belief of everyone who reads the site. They try to manipulate the website to give the spirit a weakness, but the website server crashes before it can come into affect and the brothers are forced to burn the house to stop the creature and same the hapless Ed and Harry.

Tropes

 * Clap Your Hands If You Believe
 * Deadly Prank: the Hell House itself.
 * Escalating War
 * Foil: Ed and Harry for Sam and Dean.
 * Hollywood Nerd
 * Occult Detective: Ed and Harry are pretty much what we'd expect Sam and Dean to be like in Real Life. Effectively putting one big Lampshade on the entire premise of the show.
 * Shirtless Scene
 * Shout-Out: "Who you gonna call?"
 * What Would X Do?: "What would Buffy do?"
 * "But, Harry, she's stronger than me."
 * Who You Gonna Call?: Dean even Lampshades this by yelling it out.