If you are in San Francisco this weekend, there is a good chance to get some nice offers at Cynar (The Artichoke liqueur). They had the the last week as well, but in case you missed it due to some reasons, there is a chance to grab it this time.
More details are available at : http://sf.eater.com/archives/2013/04/26/cynar_artichoke_dinner_free_super_duper_burgers.php