Textbooks

Can anyone comment on some good/bad textbooks that students should/shouldn't buy on various astrophysical/mathematical/statistical/programming topics?

Numerical Recipes in [Language]

This is a classic if you need numerical subroutines. Note that there's an electronic edition, and you can find excerpts if you Google. Also, there are usually multiple copies floating around the department. ~Taka

Accretion Power in Astrophysics (Frank, King & Raine)

Active Galactic Nuclei (Krolik)

Black Holes, White Dwarfs and Neutron Stars (Shapiro & Teukolsky)

Review articles on arXiv: some are just as useful (and often more so) than a textbook.... and they're free! ~Taka