Share 'What's the big draw at Opa!'

Last Saturday night, we were driving down Lincoln in the pouring rain and could not help but notice that the line at Opa! was out the door! People were standing in the rain waiting to place their order for Gyros. Now I love a great gyro as much as the next guy, but what are they putting in the sauce to have people wait outdoors in the POURING rain? Has anyone tried them? Our friends who we had...