I also thought the cigarette smoking should have got more play time...
Having said that I think most people would be VERY surprised how many elite athletes smoke. The damage done by smoking is more long term in nature, so an athlete can smoke and still perform very well (athletes are typically young and the damage accumulates so they suffer very few ill effects when young). This is especially true of the non-endurance events, where the absorption of oxygen by the lungs is hardly significant (in a 100 m sprint the athlete uses the oxygen and glucaagon ALREADY in the muscle cells, there simply isn't time for the body to replace it). Also for some it distracts them in between competing (athletic competition involves LOTS of waiting and then some very brief/frenzied activity). The nervousness of waiting may have more negative effect than the smoking so anything to distract you helps (smoking doesnt actually calm anyone down but it does give peopel something to do).
I am not advocating smoking... It is horrible and bad for you but I do find its prevalence amongst elite athletes interesting and somewhat counter intuitive... Sorry for hijacking the thread :-)