Suggestions for cutting cheesecake at home:
 
1. Take a chefs knife and hold over burner on stove, just long enough to heat up the blade (can also be done by holding under running hot water)
 
2. Slice cheesecake completely in half first (this will make pulling the slices out much easier)
 
3. Wipe the blade of the knife off after each slice. (Starting each cut with a clean blade will result in a much nicer looking slice of cheesecake)
 
4. Heat the blade again and repeat.
 
5. Only slice as many pieces as you will use at one time.  The rest of the cake will keep much better if not sliced.