Harry potter and the Holy Grail, take one:

Harry and Voldemort walking through windows program.

"… …. … …" Voldemort watched the dots flash across the white sky. "…Is there something you want Potter?" Harry shrugged, "Want? No, but I get this feeling were forgetting something, like a promise, you ever get like that?" Voldemort sighed. "Potter, that happens to everyone, especially Dark Lords. But we take precautions against it."

Harry raised an eyebrow. "…You don't think very highly of promises, do you?" Voldemort looked wounded. "Of course I do! You have no idea! And I strive my hardest to keep every promise I make!"

"...Some how I don't believe you, really, your pulling my leg." Voldemort shook his head. "No! I swear on Slytherin!" Harry whistled. "This had better be good…" Voldemort huffed, "good? Good? Its genius like everything else I do!" Harry sighed. "I shouldn't have brought it up, well, what is it then?" Voldemort shrugged. "Its simple really, I only make one promise to anyone, and I always keep it." Harry stopped, "…if your about to say you keep your promise to destroy those who stand against you, you've got me right here showing you've broken it." Voldemort opened his mouth, closed it, and lowered his head. "Darn you Potter…"

Not far ahead was, MORE WHITE SCREEN! hahahahaha!(you should all have been expecting that.) But there was also a grove of trees. And the sound of explosions in the distance. But that wasn't important, because right in front of them was a rickety old bridge, and standing before (it) was a creepy old man. Voldemort raised an eyebrow. "…just what we need in here, more weird neighbors…" Harry shrugged, "Hey, at least he brought scenery and a soundtrack!" Voldemort nodded, "…true…"

They move closer and suddenly in a croaky voice the man said "Stop!"

"Who approacheth the bridge of death,

Must answer me these questions three,

Err the other side he see…"

Voldemort blinked, blinked again, started to snicker. Harry just looked properly confused. "..What's so funny?" Voldemort didn't answer. He continued however to make that crazy little giggle. Harry turned to the bridge keeper. "What's so funny?" The bridge keeper blinked, "uh, I don't know thAAAAAAAAaaaaaaaaaaHHHHHHHhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhrrrrrrrrrrrrrgggggggghhhhhhh! Not agaaaaaaaaaaiiiiiiiiiiiiiiiiinnnnnnn!"

And he vanished over the side into fiery-evil-evil-Ekky-ekky-ekky-ekky-z'Bang, zoom-Boing, z'nourrrwringmm-iness.
(try to say that three times fast!)

Harry looked horrified. Both by seeing the old creepy man vanish so spontaneously,and also by the odd chorus of "Ni"! from the tree line. He turned to Voldemort who seemed to be coming to his senses. "WHAT was so FUNNY?" Voldemort wiped his streaming eyes.

"…Oh, I just (knew) that was going to happen!"