A 37-year-old man is in critical condition after being stabbed in the neck with a broken beer bottle at a concert hosted by BlackBerry maker Research In Motion in London Tuesday night. The party was being held to celebrate RIM's BlackBerry Messenger tool, according to the Wall Street Journal blog.The stabbing occurred after a performance by British pop singer Jessie J at the Pulse club in London, according to the online music magazine NME.