You absolutely need to read this hilarious article about a drunken rumble-that-almost-was between employees of ATI and NVIDIA employees at the CeBIT conference. It appears to have started after the ATI folks showed up during an NVIDIA and started hitting on one of the female NVIDIA employees. The conflict went outside and was only saved from violence by their better judgement (or perhaps the intense fear of pain inherent in all geeks).
Brilliant. Here’s the link once more for luck.