Does a Nutcracker need tevilah? What about Poultry Scissors? Can opener?
Poultry scissors: no. From the Star-K:
(Assuming you only use them for raw poultry.)
Can opener: no, again from the Star-K.
Nutcracker is an interesting one. Nuts are edible raw; the question is if the nutcracker is viewed as coming in contact with the edible food (like a carrot peeler), which would necessitate tevila; or if it's analogous to a can opener, which is only intended to cut apart the metal and leave the food alone. UPDATE: the Star-K replied via email that yes, it must be toveled.