Last night, on a spur-of-the-moment ice cream run, Drew and I heard my first radio commerical on the local hip-hop/R&B station. It is the first script I've written for this particular medium, so I was all proud and stuff. It was ALMOST like when you're a recording artist and you hear your song played on the radio for the first time...ahem...*cough*...yeah....
Almost. 
-Em
P.S. I'm sorry I didn't answer your questions earlier in the week...my only excuse is that it has been a crazy one. Without getting too detailed, because I don't really talk about work here in much detail, the commercial script (well, scriptS, because I wrote a few different versions of the same commercial for different stations with different target demographics) were written at my day job in marketing communications/public relations for a regional educational organization. The commercial itself wasn't anything terribly earth-shattering (thus my sarcasm above--I'm obviously NOT anywhere in the general VICINITY of a superstar--haha); it is only running for a limited time to advertise an upcoming event and communicate key messages about one of our services (and hopefully, increase awareness and enrollment). I think that about sums it up. Oh, by the way, sis--nope, the one I was seeking your opinion on this summer was for a TV commercial that played earlier this fall on certain cable channels. Though I did some of the project management and editing of that commercial, I didn't do the actual scripting of that one. So, yes, this is officially the first commercial script that I've written by myself for any medium (radio/TV/cinema). Hope that helps clarify!