SFX listed their picks of the 14 Greatest Format-Breaking SF & Fantasy TV Episodes Ever:
12 Supernatural
“Ghostfacers” (2008)
Another appearance by the two geeky ghost-hunters from first season episode “Hell House” was always on the cards, as Harry Spangler (Travis Wester) and Ed Zeddmore (AJ Buckley) were perfect comic relief foils for the Winchesters. And boy, did the writers do it well, bringing them back with a full team of spirit chasers – the eponymous Ghostfacers – to investigate a creepy house using handheld and night vision cameras in a spoof that probably made Most Haunted a little grumpy. The Facers bump into the Winchesters, suffer a loss and witness a frankly chilling birthday party (despite the humour, this has some very scary bits). But it’s the gleeful way the episode breaks the rules that makes it so brilliant, from characters swearing and having the words bleeped out to Dean giving the camera a (pixellated) finger in the opening credits. The Ghostfacers picked up their own fan following after this – it’s not hard to see why.
Source: SFX.