If the gratuity is already added to the bill (18% is a bit much), no further tip should be left, I think. Of course if the waiter did something really extraordinary (what could that possibly be?), some more could be left, which is not to say that the waiters don't expect/hope diners will be confused and leave more. If the service was absolutely atrocious, I would even cross off the 18% "mandatory" tip, as this shouldn't really exist. In a really extreme case, you might even consider stealing an ashtray. The credit-card printouts include the extra tip line because that's the way they're programmed; the card companies don't really think a restaurant would add a "mandatory" tip.

[This message has been edited by Track (edited 08-04-2002).]

[This message has been edited by Track (edited 08-04-2002).]