Dr. Horrible and Other Horrible Stories by Zack Whedon et al.
This graphic novel fills in a little bit of the world of Dr. Horrible's Sing-Along Blog, a web short created by Joss Whedon and friends during the writers' strike of 2008. The short is entertaining and creative, showing the life of Dr. Horrible, a villain who wants to move up in the world. His big aim is to join the Evil League of Evil but his evil schemes are thwarted by oafish hero Captain Hammer. He's also distracted by Penny, a beautiful young woman he's fond of. She winds up dating Captain Hammer, another thorn in Dr. Horrible's side.
The graphic novel tells several stories about different characters. Some were definitely more entertaining than others. The best story follows the Evil League of Evil as they rampage across the city while the Council of Champions is off on retreat. The stories where Penny goes on a date and Dr. Horrible remembers his origins are both interesting and fun stories. Captain Hammers PSA and Moist's origin fell flat for me.
The book is a mixed bag and only of interest if you have seen the Sing-Along Blog.