How many of you (coders) use marijuana?
godDLL: I use marijuana.  I also use tea.  And tomato juice.  
I'd say it does affect your coding, to the worse.  However, it makes your creative thinking and problem-solving more enjoyable, which is a good thing, and positively gives you a boost.So when I actually sit down to code something I designed prior to this, I won't use it, it makes me slow and narrows the attention scope, which makes me paranoid, which makes me go through my code a couple more times, and definitely more than needed to catch all the trivial bugs.