Sojourner at 2011-04-18 08:45:26:
Some serious, some not - you decide:

The Starbucks barista from hell.

The undocumented gardener from hell.

The substitute teacher from hell.

Your girlfriend's ex-boyfriend from hell.

The street mime from hell.

The presidential candidate from hell.
Carlos M Hernandez at 2011-04-18 11:00:33:
The Substitute Teacher from Hell sounds like a great 80s movie that never was.
Nate Winslow at 2011-04-18 21:27:14:
http://www.imdb.com/title/tt0117774/plotsummary