Yeah, those are some pretty sweet stunts that aren't too difficult to pull off. The smoke one is my favorite. I'm able to do it pretty well now with very little reaction fom the burning sensation the initial inhalation creates. Also, it probably isn't very safe doing that as you're inhaling a bunch of volatile sulfur compounds and oxidizers into your sinuses. As long as you don't do it on a "strike anywhere" match, you're not inhaling phosphorus itself. Still, the phosphorus compounds in a match head are fairly toxic so you don't want to go through a whole box of matches.
