Here's one of mine:
Dave Wedge opened his front door looking extremely tired and fairly annoyed. He was also holding a hammer in a very threatening way, just in case it had been a mad axe-murderer ringing the bell. He was rather taken aback at being woken in the wee small hours by men in white coats but they didn't seem to be carrying any long-sleeved jackets with buckles so he assumed they were just causing trouble.
"Sorry to wake you," began the older of the two white-coated men, "but I wonder if..."
"Do you know what time it is?" interrupted Dave, wielding the hammer threateningly.
"Yes thank you," came the reply, "but we still need to know the date."
"The date? Graaargh!" Dave drew back the hammer, ready to deliver a vicious blow to the head of the man who'd woken him. The second white-coated man stepped forward, pulled an ugly-looking gun from the pocket of his lab coat and placed its barrel against Dave's nose. Dave dropped the hammer and put his hands up.
"This gentleman is Professor Thaddeus Hobgoblin," spoke the man with the gun, "one of the most brilliant men to walk the face of this planet since Frankenstein. My name is Saskins and I have the honour of assisting him in his crazy experiments. Extreme circumstances have driven us to wake you up at this dreadful hour and if you would be so kind as to tell us the date we'll be on our way and you can go back to bed."
"Twentieth, no twenty-first now, of August. Twenty-three sixty four," squeaked Dave Wedge.
"Much obliged," said Saskins, "goodnight." Dave stepped back as Saskins pulled the door shut.
"Damn," said the professor. "Two weeks too early." He pulled a small black box from his lab coat and pressed the small white button that was in the centre of it, beneath the small green dial and above the small, dimly glowing sensor that made sure only the professor or Saskins could use it. All in all, the whole thing was small - that's the wonder of modern technology.
A pea-sized dark point appeared in the air above the garden path. The point was so deeply dark and so terrifyingly black that the boring, entirely ordinary early morning darkness seemed to shy away from it and it could be seen clearly. The professor took a step towards it and reached out with the index finger of his right hand. He touched the black point and Saskins watched as the professor crumpled up and was swallowed into it. Saskins moved towards the point and reached his own finger out towards it. He too was swallowed up. Moments later the point disappeared with a tiny squelching noise.
Professor Hobgoblin watched as Saskins un-crumpled from the bright white point floating in the centre of the Esoteric Chronology Laboratory where they were performing the professor's latest experiment. As soon as Saskins had broken contact with the point, the professor pressed the button again and the point vanished, silently removed from existence.
"'Crazy experiments?'" The Professor raised his eyebrow and attempted to look sternly at his assistant. Saskins just grinned. "And where on earth did you get that gun?" he asked.
"I know a guy who works in the weapons lab. As long as it's back by tomorrow then there's no need for the paperwork and no-one will know."
"Would you really have shot that man?"
"Not in any serious way. He would've got a whiff of happy gas, told us what we wanted to know and gone back to bed peaceful as anything. If I'd put the switch on the gun to the maximum setting it could have taken the top half of his house clean off. Strange weapon."