Quite a few times when I was a messenger. Also distinctly remember celebrating when WA state changed the law so that DUI did not apply to cyclists. That being said in such states I became a very sedate sidewalk cyclist and was really only ever a danger to myself, though I never even fell over or had any motorist run ins. IMO, not even remotely the same issue as driving while intoxicated and I'm sure that the statistics reflect that too.