I'm not sure what computer science courses require more than calculus or discrete math.
Basic linear algebra may be useful for a graphics-related course.
Other than that, once you're in the program, I would image that you will be able to pick whatever math you're interested in, depending on your goals.
Numerical Analysis - that's a really good one. I have yet to take this course myself.
Number Theory - theory of congruences, prime numbers are useful in Cryptography, hashing, etc.