I just heard about this game, but damn, I had to buy it one second later. I played the original House of the Dead: Overkill on the Wii and loved every second of it. I hope this PC version has been handled well.
For anyone unfamiliar with Typing of the Dead (this is the second game with that title), it's like a regular lightgun game with zombies, but instead of shooting a gun, you're typing words and letters as they appear on the screen. Each zombie has a word or a sentence attached to it, and you need to type it perfectly to kill it. The difficulty is adjustable.
If you're on the fence, just ask yourself this: How many educational games do you know about that features the word "motherfucker" at least once per minute? http://store.steampowered.com/app/246580/
The game is 50% off until November 1st, btw.