Tales of the Slayers (graphic novel)
As previously mentioned, I don't usually read graphic novels, but the library had a bunch of them and I had time during the summer. I picked up a few of them.
There were a few Buffy, the Vampire Slayer comics, almost all featuring the characters from the show. Casually flipping through them, I wasn't interested. However, Tales of the Slayers was different. It was a bunch of short stories featuring Slayers from the past and the future, filling in more of the mythos rather than simply supplementing the series. I enjoyed it.