X-Forces
Big Black Guy
You can have a .02 BAC during a standard drug & alcohol random screening, probably not get violated by the FAA but would be suspended/fired by your employer.
On a side note...sometimes 8 hours is not enough. Sometimes 12 hours is not enough. If you do some heavy partying, it can take up to 24 hours to really sober up. NEVER drink more than 1 or 2 if you are flying any time the following day.
Of all the problems that that can plauge a professional pilot, I am glad to know that this is one I shall never (even thought they say never say never) have to deal with.