Bellie and Shadow both know...
Sit
Stay
Come
Down
this way (used mostly when off-leashing...means you don't have to come
to me, but you need to follow in my direction)
Sit Up
Stop (...freeze/halt, don't take another step)
Shake
Speak
Touch (touch what ever object I point/gesture/signal to)
Heel/loose lead walking
Back Up
Circle (spin)
Watch me
Heel
Shut Up (we taught it as "quiet" but it slowly morphed into "shut up"

they now respond to both, lol)
"Find the Cookies"
Get back
Wait
Lets Go
Go Home
Get out
Go to bed
Sic 'em (obviously not literally...just barking...but nonetheless, my dad "taught" (more like association) this one

)
Go find...mommy/daddy/the puppy(neighbor dog)/the baby(term we use for gpig/cat/any other small furry)
Free (our release word)
Leave it
Away, Away (give me some space/get back/leave area)
Drop it
Out Front/Out Back (dif. between front door and back door)
Hop/hup
Clean-up (permission to eat whatever been dropped)
get over (get off of the street/driveway)
Its all that really comes to mind, there's probably a lot more though. I use so much of it so much in our daily common "language" (for lack of better term) I don't really even realize it anymore, lol.
Also some that are not known by both dogs...
Belle can...
do the "treat on the nose" thing
stand up (like from going from a down to standing)
Chill (down w/chin on the ground)
give kisses (...basically lick on command)
and Shadow can...
dance
take a bow
crawl
go find...tiger/snoopy/hedgehog/a few others... (names of toys)