I've bought in on deals that you would expect somebody to purchase; deals for restaurants, sporting events, Old Navy, RedBox, NuttyGuys.com, Bath & Body Works (don't judge!) and Fandango.
Then there's the not so conventional deals...
RiverWalk Dental Spa: This is the the deal I broke the ice on. I bought in on a deal for Zoom! Whitening at this place. That's not big in itself. My relationship grew with this dental office, and they offered me a $1000 discount for my eventual Invisalign treatment. I don't know how many other people can say they found their dentist on Groupon. I drive 90 miles to their office, but it's worth it to not "feel" like I'm seeing the dentist. It is "dental spa" after all.
Strictly Ballroom Dance Studio: For the past year or so, I've been telling myself I need to learn how to dance. I'll be getting three half-hour private lessons, one group lesson, and a studio party. It includes me and a partner. I still need to find a partner. It can be kind of awkward to ask a female friend to travel with you an hour (1 night each week for 3 weeks) so she can engage in an activity which requires physical contact with you. I'll get it done.
To top everything off, I found the best website for Groupon addicts; Grouspawn. It's for couples who used a Groupon on their first date, or individuals who want to use Groupon on their first date. Unfortunately, Grouspan does not provide service for the Southeast Kansas/Northeast Oklahoma area.
Are you addicted to a deal site? What is an odd deal you purchased through a deal site?