List of useful sites/resources for chemists/biochemists

So just thought I start a list of some sites and resources that I have used a lot during my PhD. This is a working list.

Google scholar
Easy way to look up papers, and for looking up papers for downloading a citation for Endnote (or similar). For anyone who goes to Melbourne Uni use this URL: http://scholar.google.com.au.ezp.lib.unimelb.edu.au/ . It will give you full access to most journals. Other institutions would probably have something similar.

Delta Mass
Really great site for trying to work out what are those adduct peaks are in your mass spectrum.

SDBS
Ever wanted to find experimental spectral data (NMR, IR, MS, etc) on common compounds? Look here!

Reaxys
Like SciFinder but way better!

MolPort
Think of it as Amazon for small molecules.

Please feel free to comment on any other sites that you have found useful.