Your show may have a cult following if...

your fans seek to find out the name of a character, in this case a demon, whose name wasn't specified in an episode. "His character was not given a name in this (Once More, With Feeling) episode. However, the credits stated "Sweet makeup by...", and from this fans adopted his name" (http://buffy.wikia.com/wiki/Sweet). I found that establishing a name sort of disappointing. Nameless "bad guys" is an interesting concept. The exchange of his name-asking with Buffy is in Whedon style witty:

BUFFY: You got a name?
SWEET: I've got a hundred.

Why didn't Whedon name him in the episode, it would be hard to say. It could be interpreted as the creative demon that possesses writers' minds to write musicals. This could be Whedon's reflection on writing "Once More, With Feeling" given he does give Sweet a dark foreshadowing for the characters that only someone as omnipotent as a writer could know for the future of Buffy's characters as he exits he sings:

SWEET: (same tune as his first number)
What a lot of fun
You guys have been real swell
[chuckles, begins dancing]
And there's not a one
Who can say this ended well
[Buffy and Spike watching]
All those secrets you've been concealing
[Willow, Tara, Giles, and Xander watching]
Say you're happy now,
Once more with feeling.
Now I gotta run
See you all...

Between fan-fiction and maudlin youtube Buffy tribute compilations with teeny bopper music in the background, it is clear that Whedon has established a somewhat creepily obsessed fan-base. Watching Buffy hasn't turned me into one of Whedon's loyal fans though. I found Buffy's script to be witty and the episodes we watched were entertaining, it just didn't draw me into to finish all the seasons in a couple of days in true Netflix style. If I watched Buffy when it came out, maybe I would have found Buffy more groundbreaking then I do in 2011. We'll see what Firefly will do to my perception of Whedon. I tried watching one of the Firefly episodes on Netflix but couldn't get past the cheesy country song opening.