Jill Bolte Taylor, an Indiana University School of Medicine neuroanatomist, gave a fascinating talk at TED in February. (The video is embedded below, here is the direct link). While I certainly think the video is worth watching (otherwise I wouldn't feature it here), I have a couple of serious reservations. It's clear from the video that Taylor's experience was an intensely emotional one and, let's be frank, science and intense emotions don't go so well together. It certainly made me worry when she started going on about "nirvana", it annoyed me that she dramatically oversimplified the very nuanced, complicated and still emerging picture of hemispherical specialization in the brain, and it frustrated me generally that she seems to let her emotions get in the way of her science. (To be clear: emotions are important and I have no problem with them being expressed, even at TED. But we should try our best not to let our emotions influence our intellectual positions - that's what I'm criticizing Taylor for, not the sheer fact of being emotional).
See also: Wired's article on Taylor's TEDTalk.