Checksums in Windows

For a while I have been meaning to find a good checksum tool that I can use within windows but have gotten around to doing it properly.

SuperUser to the rescue:
http://superuser.com/questions/166233/is-there-a-built-in-method-for-computing-an-sha-1-or-md5-hash-in-windows-7
http://superuser.com/questions/245775/is-there-a-built-in-checksum-utility-on-windows-7

These led me to this:
http://code.kliu.org/hashcheck/

There is another alternative named HashTab but after reading this and looking at each of the options I ended preferring the look of Hashcheck.