Some people take the subtle and sweet approach, while others just get straight creepy.
My work started using a program that began hiring ex-cons. One of the guys hired through this program started showing interest in me. I wasn't attracted to him at all and made it clear to him...repeatedly. Long story short he got fired 3 months later but kept coming around the store "to visit his friends". I go out to my car to read during lunch like normal and there's a creepy metal and mesh flower on my windshield. I look around the parking lot to see who could have left it and see no one. I threw it into a grassy area and forget about it. I read through my lunch hour and go inside and no sooner than I clock in I hear a page that I have a phone call. It's him. All he says is "You look so pretty when you're reading". I hung up immediately and told the manager. He kept doing more things that escalated the creepiness. I ended up getting a emergency restraining order against him when I found out he added me as a emergency contact with his parole officer. I didn't even know him!!! (Source)