Below is a set of links to really useful anaesthesia site.
Feel free to let me know about links you find useful, and I will include them.
cheers
Rob
Virtual Anaesthesia Machine at the University of Florida:
http://vam.anest.ufl.edu
Interactive Clinical Pharmacology
http://www.icp.org.nz/index.htm
An excellent, interactive visual demonstration of pharmacokinetic and pharmacodynamic principles.