Got cut off by a cabbie today. Heading into an intersection, he got in the right hand turn lane and, behind him, I continued along in the bike lane (unposted but obvious in that area). So he doesn't turn right, but instead guns it in an attempt to pass the guy in the proper lane and swing back in before the end of the intersection. Being a total tool, he fails, and swings back in like less than a foot in front of me, on his brakes. So I resist the pedals and hit my brake hard enough to do a little endo, move around him and smack his trunk really hard and loud (hopefully scaring the feces out of him), and give him the finger right in his face as I pass the driver's window. Wishing he was right, he honks at me, then passes me and honks again. But I had the last laugh, as he got stuck in traffic and I passed him like he was standing still, because he was.
Anyway, the moral of this story is "don't trust cabbies". They're nuts.