I didn't get a chance to meet the Undertaker, although I would love to as well. The ones I did meet:
Shawn Michaels
Triple H
Stephanie McMahon
Vince McMahon
Mick Folley
Hulk Hogan
Jerry 'The King' Lawler
The Rock
Hacksaw Jim Duggan
Doink the Clown
Eddy Guerrero
Owen Hart
Kane
Sunny
Stacy Keibler
Chavo Guerrero
Xpac
Road Dog
Billy Gunn
Ron Simmons (Faarooq)
John Layfield (Bradshaw)
Jim Ross
That is just a couple of them. I tried to meet Stone Cold, but he left before I could.