Check out what's being bundled with UK and Australian editions of House of the Dead: Overkill.

In my book that takes the cake as the coolest Nintendo peripheral for shooting dudes, edging out the Super Scope. I'm not even a huge fan of guns in general, but if I have to take out a horde of zombies I sure as hell would rather have this in my hand than that freaking Wii Zapper. I will not get laughed out of the Zombie Apocalypse!

Check it out on Amazon.
Thanks to Kotaku for the tip on this one.