I remember the first time I used Tcl/Tk. My friends were passing it around, and I didn't want to be uncool. So I tried it. The syntax felt a bit odd at first. Then, I felt this incredible rush as my software project materialized before my eyes. What should have taken months, I accomplished within in a week. I've been hooked ever since. For many years, I would take on any software project--any excuse to use Tcl/Tk. These days, I've made it my mission to warn others about this dangerously addictive software. During this talk, I'll show off some examples and screen shots from my sordid past.