I don't do much in the ways of boozing and smoking. But I do have my guilty little pleasures. Most of them relate to the “boob tube.”
I don't really watch TV very often, but I like having the noise on and I listen to it fairly frequently. It helps to keep my mind flowing while I work. I actually work faster while I listen to TV. Especially if I'm programming.
So all this TV-listening is where my guilty pleasures arise from. Murder, She Wrote is undeniably more suited to the 60+ set, but I love watching it. In fact, it's what I watch while I work out. I remember watching it with my family on Sundays many years ago. Perhaps that's why I like it still.
Another guilty show that I might explain away as merely channel surfing, should someone walk in is 7th Heaven. It's sappy. It irritates me and I watch it anyhow. A little insult/poke fun track runs in my mind while I watch it. That goes double when I watch another guilty pleasure, the tween TV on The-N. Degrassi, the next generation and other tween junk. The acting is attrocious, but it amuses me. 
My last guilty pleasure would be any made-for-TV movie about European royals. They're so fascinating and scandalous. I might even consider myself a minor Royal Watcher. This, of course, started with His Royal Hotness, Prince William. But really, I find all the royals fascinating. 
Well, now my secrets are out. I guess I'll survive.