Met The Rock at the hotel before a show. Met Big Show outside the venue at another show. Also met Matt and Jeff Hardy, Edge and Christian, Lita, Chyna, Booker T, Teddy Long, Matt Morgan, John Cena. I'm sure there are more, but a good chunk of these are over 10 years ago. Found that the easiest way to meet them is to hang out outside the venue before the show when they are all coming in from the hotel. Most are pretty cool with stopping to meet fans, or coming back out after parking their rentals.
One time I was almost hit by the car driven by HHH. He took the corner into the garage a little too fast and came about a foot away from taking out my knee. Kind of wish he would have... I wonder what kind of settlement the WWE would have made to keep that one off the books.