what's the best, funniest, or most memorably moment from any BRP game you've played in or ran?
For me, it's in my current Cthulhu campaign (as this is the only BRP game I've played to date). One of my players is an inveterate power gamer; this is most noticable in D&D, where his 3rd level Monk will do approximately twice or three times the damage of a 5th level raging barbarian with Power Attack and a greataxe. He is attempting to power game in Cthulhu, which itself strikes me as amusing.
So he juggled his stats so that he had a 17 POW and everything else was under 10. Starting SAN was 85. Then, once his character found out about the Mythos, he did everything he could to collect every Mythos tome he could find, keeping them to himself. He currently has Cthulhu Mythos 25%.
I'm running the Shadows of Yog-Sothoth campaign, and in one room of the lodge in the first chapter there are four Mythos tomes: Nameless Cults, Revelations of Glaaki, Cthulhu in the Necronomicon and I forget what the fourth one is. He declares that he's going to search the room for Mythos tomes, and I tell him to roll four Library Use checks. He fails three, and declares, "08, that's a success!" for the fourth. I'd mentally associated each check with a specific book, so he finds the Revelations of Glaaki, which is a 12-volume set. I'm not going to give him the whole set, so I roll a d12 to see which he finds. He gets volume 12, which, if you're familiar with the book, has a spell woven into the text that draws the attention of Horrible Icky God-Monster Y'golonac to the reader.
The character is now slowly becoming possessed by Y'golonac, who makes it seem like a good deal -- let me in, and I'll teach you spells, give you forbidden knowledge, etc., but cross me, and I'll make your life a living Hell.
I later found out from one of my other players that the power gamer fudged that last Library Use check. I'd noticed him fudge a die roll before, and so had asked this other player (who is also my roommate) to keep an eye on the power gamer's dice. Turns out he rolled an 80 for his last Library Use check, and declared it an 8.
So if he'd been honest, his character wouldn't be slowly mutating into an avatar of a horrific being from beyond time and space.
This is why I haven't said, "Hey, I know what you're doing, and I'd appreciate it if you'd stop," because his actions are screwing his character over more thoroughly then anything I, as GM, could do to him.