University of North Carolina
Caps Unc Chapel Hill: Mitosis World Home
An excellent, concise description of the process of mitosis. There are links to mitosis labs, mitosis movies and other links relating to mitosis.
University of Arizona
U of a Biology Project: Cell Cycle and Mitosis Tutorial
Poses and answers the question, "What is (and is not) mitosis?" An overview with images of the phases of mitosis, plus a mitosis animation.
National Health Museum
Access Excellence: Mitosis Diagram
An excellent Access Excellence color diagram showing the four principle phases of mitosis; includes a short description of each phase.
Other
I know.net: Mitosis
A complete site from iKnow.net that compares the various phases of mitosis in plant and animal cells. Text is supplemented with pictures of each phase.