Hp (Ghostwatch)
From Tardis Wiki, the free Doctor Who reference
Hp was the nickname of a viewer of Ghostwatch. In 2007 he was watching the show in which Suzy Monroe got killed by a Cybermen. He texted Ghostwatch that Suzy Monroe should go onto one of the balconies of the Powell Estate and should watch out for ghosts from there. (GAME: Ghostwatch)