My first Broadway show was 9 to 5 while it was still in previews mid-April 2009. I was on a trip with my high school drama club and our teacher, who was a really big Dolly Parton fan, got to pick the shows. I liked it well enough at the time, but after seeing a few more Broadway shows and many many tours since then I can see why it didn't last. Megan Hilty and Stephanie J Block were fantastic though.
The first Broadway Tour I saw, however, was the RENT one in early 2009 with Anthony Rapp, Adam Pascal and Gwen Stewart. For someone who was only mildly interested in musicals at the time, it blew my mind. And now, 7 years later, I listen to show-tunes 90% of the time.