Always!
When Im dieting I have cereal and oj. When Im cheating a little I will have either a lowfat muffin or a plain bagle with diet coke. When I know my diet is shot to heck for the day(like vacations, holidays, or when we are eating out), Ill have whatever Im in the mood for like pancakes, coffee rolls, egg sandwiches, etc..., and again, with diet coke.