Hehe, a comedy, eh? I rarely come across a sprite/Flash animation that takes itself seriously... I wonder if such a thing's even possible.

As for the sprites, well I'm going to want them as resources for the Atlas at some stage down the track, so I may be able to help out. The Kreepy Krow and ghostly Mini-Necky sprites might be a little tricky... They have a blue palette and transparency, from what I remember. I guess Flash should be able to do both of those effects, using
tint and
alpha - so maybe you won't need these specific sprites after all.
Anyhow, good luck with your search, and the project itself; I'll let you know if I find any good resources, or if I collect the sprites myself. In the meantime, some other members could probably help out.