A colleague of mine had a thing when he closed his eyes, threw his head back and sucked air in when he had a block. mine was more of a repetitive first sound [ of a syllable.. (tough when youbhave a 3 syllable name) interestingly though one of my less tactful colleagues Said how that guys stutter didn't hold him back socially like mine did (he is no longer a friend!) the Mcguire programme helped both of us. check out the video "Mustafa found his voice" on youtube, or school for stutterers.