I loved it and also have the complete series DVD. My only regrets is that they didn't bite the bullet and call Nightshade the Sandman as he clearly was, and that we didn't get to see the second season as it was mapped out, with the Captain Cold/Mirror Master/Trickster teamup and Gorilla Grodd.
I am a HUGE fan of the Flash TV show. I still plan to buy the entire series on DVD. (I have the entire series on VHS, but I still want the official DVDs). This was the show that got me into buying the Flash comic books in the early 1990s (although I stopped at a certain point).
I wish the DVD set came with an isolated score...I think the music was one of the fantastic things about the series.
Oh, and the Flash costume was awesome. I'm hoping they use a similar costume in the live-action movie.