Munchkin 8: Half Horse, Will Travel

Munchkin 8: Half Horse, Will Travel is a 112-card expansion for Munchkin that adds two new races to the game: Centaur and Lizard Guy. A myriad other new cards are included, such as race/class enhancers (Elite, Legendary, and Elder) and monsters (Gecko On The Telly, Centaurpede, and the Knight Mare).
The name for this expansion was selected via a contest. Users were asked to submit entries, and the Steve Jackson Games staff chose "Half Horse, Will Travel" - submitted by Michael Shore - as the best entry.