My favorite is still this one, but I can't remember who did it:
Helmsman (with a high southern drawl), "Captain, Captain! What's that in space ahead?"
Captain, "Oh no its another space turkey! Darn this solar system anyway, nothing but space turkeys! Get the phasers on that bird!"
CLICK
Helmsman, " Captain, Captain all the stars have gone out!"
Captain, "No you fool! You've leaned on the button! Turn the viewer back on!" CLICK "Now get the phasers on that bird!"
CUE ANGELIC MUSIC, THEN SOUND OF PHASERS FIRING
Space Turkey, "I am an angel of the Lord... AAARRRGGGHHH!!!!!!"
Captain, "Ahhh, that baked him good!"
That isn't all of it, but thats all I can remember.