The video features many people from the SAS community, including customers and SAS employees. Watch it and see if you know anyone! They each have their own spin on what it means to be "a semi-colon person" - a.k.a. SAS geek. For example:
You know you're a semi-colon person IF...you use "I'm beta-testing 9.3" as a pickup line. It works...trust me.
YouTube also suggested this related video: A "SAS rap by coworker" that extols the virtues of the semicolon.