Rob Bruce sets up at local shows here, but always just brings junk to sell. I don't really think he's a celebrity, especially around NJ.
I've been to Secret Stash a few times (a few years ago and recently) and Mike is incredibly rude, and Walt looks like he hates working at the store. I'm guessing Ming works in the back, because I never see him there.
While we're on the topic, I was at a LCS sale this past Saturday, and the employee told me how the Secret Stash guys frantically called them the night prior to the sale asking when the store opened, and then came to the store at opening and cleaned them out. I don't know what they bought though.