Tipping after a restaurant meal involves an intricate web of complex economic issues and social mores. Many of us will remember the deftly articulate (and profanity-laden) discussion on the issue in the prologue to Reservoir Dogs.
A less well-known alternative method of tipping was demostrated by Dick Solomon (John Lithgow to his friends) in hit-and-miss sci-fi sitcom Third Rock From The Sun:
What do you think about tipping? Let me know in the comments.