I've seen most of them before. The demonic voice one made me chuckle, though, and the explosion one.
Drumrole? What the hell? Do you mean 'drum roll'?
Walk on with an appropriately sized cooler that says :"human head" on the side.
"Appropriately-sized", I believe.
Anyway, on the subject, for those of you who haven't read The Hitchiker's Guide to the Galaxy, here's one of my favourite bits (entirely omitted from the film ? damn simpleminded Yank senses of humor). It's when Arthur Dent is discussing the demolition of his house with the council worker Prosser:
PROSSER: But, Mr. Dent, the plans have been available in the local planning office for the last nine months.
DENT: Oh yes, well as soon as I heard I went straight round to see them, yesterday afternoon. You hadn't exactly gone out of your way to call attenion to them, had you? I mean like actually telling anybody or anything?
PROSSER: But the plans were on display...
DENT: On display? I eventually had to go down to the cellar to find them.
PROSSER: That's the display department.
DENT: With a torch.
PROSSER: Ah, well the lights had probably gone.
DENT: So had the stairs.
PROSSER: But look, you found the notice, didn't you?
DENT: Yes, yes I did. It was on display in the bottom of a locked filing cabinet stuck in a disused lavatory with a sign on the door saying "Beware of the Leopard".