Well he's not a stalker in the sense that he knows where I live and follows me everywhere or leaves me voicemails. It was around when I was 21. We showed interest in that way and exchanged numbers and hooked up a couple of times. Last time we hooked up I was visiting my city (was home at my parents for that summer) he started telling me all this weird shit about how he steals from my store and once stole a netbook and "the blonde lady with the big ass" (our SL ETL at the time) almost caught him. Weirded me the f out. I transferred to a store near my parents for that summer and I was so freaked out that somehow I was gonna get linked to him that I told AP at that store and they contacted my store.
After that he would come in the store and follow me around and stare at my junk. AP would follow him at times (both TPS and APS) and LOD would make me go in TSC until he left. He stopped showing up.
Then I was coming home one night from Target and my friend invites me to her apartment. Walk in and look to the left... I see him with a dude (my friend's friend) sitting on her sofa! I go in the kitchen and tell her I have to leave; that's the dude that follows me around staring at my junk. He was in my freaking building!! A couple of years later, my BF and I went to a club and he comes up to us and yells "HEY BUDDDDDY!" Ugh. My boyfriend calls him "Hey Buddy" now.
I've seen him in the store maybe four times the past year and a half after not seeing him for a while, last was maybe two weeks ago. He makes me uncomfortable and will look out for me. ETLs will ask me if I want them to ask him to leave, but I generally just stay away from him. One HR even offered to setup an escort to my car when I leave but I didn't think it was necessary. I do tend to get very uncomfortable when he's there and will look over my shoulder the rest of the night and freak out a bit if I see someone who looks close to him. But I don't think he's a real threat.