A Freakonomics Contest: What Do You Say to a Celebrity?

Earlier this week, I was sitting with my friend Bill poolside in Las Vegas.? (For the record, there are few things I like less than pools, but unfortunately there are few things my kids like more.)
Bill recognized an older gentleman sitting nearby and said to him, “I’m a big fan of your work.”
The man nodded and quietly thanked him.
The gentleman was Ron Popeil, who amassed a fortune by bringing the “pitchman” style to TV, direct-selling products like the Veg-O-Matic, Mr. Microphone, and the Ronco Food Dehydrator to a nation of consumers hungry to slice, dice, and, apparently, extract moisture from five trays’ worth of fruit.
As we walked away, Bill said, “That was so lame — I should’ve said something better.”
That got us thinking … what do you say to a celebrity??? I think the right answer is to say nothing at all and pretend you don’t recognize him.?? Others I’ve talked to disagree.
We haven’t done a giveaway in a while so for some Freakonomics schwag, what would you have said to Ron Popeil?
I’ll pick my favorite answer among those posted in the first 24 hours.
P.S.? If you were going to submit “Is that a Pocket Fisherman in your Speedo, or are you just happy to see me?,” my sister Linda beat you to it.
Addendum: You can see the contest’s winner?here.