Yea some are missed even in all of these above ^. http://labs.google.com http://labs.google.com/personalized
which is VERY ELITE http://www.google.com/help/operators.html
for commands http://soople.com/
this one has search buttons that do all the advanced operators
That should be a good start.
"Beware the Jabberwock, my son!
The jaws that bite, the claws that catch!
Beware the Jubjub bird, and shun
The frumious Bandersnatch!"