Technically, discovered the books because of the TV show, although it was because of a discussion with a friend who had been reading the books. I was complaining about there never being anything decent on TV, and being out of reading material to make up for it. He'd been seeing the preview hype about Dresden, and told me about it, killing two birds with one stone, so to speak.
I ended up watching the series before I had a chance to get the books. I'm really glad I did. I was disappointed that the series ended, but ended up with a nice stock of reading material, with more to come! It softens the blow some.
As a series, I think it was great! It fit in nicely with the Dresdenverse that Jim has created, without straying too far from creational "intent", I thought. It was also fun reading the books after the fact, and being able to pick out pieces that the series had tried to match to the book, and where they took the creative license elsewhere.
I'm new here, and am glad I found the site! "Romeo" hasn't yet finished DB, whereas I've now re-read everything 3 times through SmF (I think I'm learning the acronyms!) It'll be nice to have a place to hang out and talk to fellow fans while Romeo gets caught up.