Three times recently I would have been overcharged by restaurants if I hadn't been paying attention to the bill. One was a more expensive bottle of wine than the one ordered; the other two were extra entrees added onto our bill. In all three cases we had been drinking heavily during dinner. It could be coincidence but it certainly made me wonder if this is a routine practice by restaurants. I can't ever remember a time when I've looked at the bill and said, "Gee honey, they forgot to charge you for your steak".