I had a pleasant surprise with UA's program recently. I was checking over my most recent "current" statement, which contained April 99 activity. There was a dining mileage credit on a date I didn't recognize. A check of my credit card statement revealed that it was for a restuarant in NYC that I had visited with a friend, completely without any knowledge that it was part of UA's dining program. A nice little unexpected bonus.

And the restaurant name (I'm not kidding):
"Serendipity".

p.s. It was great food as well. The absolute best vegie burger I've ever had. (As a vegetarian, I feel at least somewhat qualified to pass judgement on that.) And positively divine sundaes.