Well, it isn't as dull as you think. While surfing online one fine day I stumbled across a website with five minute episodes of Star Trek Voyager. The basic idea is summarizing an hours' plot in five minutes, and they can be extremely funny.
So I tried to apply the same thing to Buffy the Vampire Slayer since there are a lot of things you can poke fun at with it as well.
From the horses' mouth, the purpose of 5 Minute-ness:
Here's the original site I based my writing off of. The original concept is COMPLETELY Zeke's. I wouldn't dare try to rip off his work. It's too awesome.
Still confused? See his funny (and comprehensive) FAQ here.