Here is a long list of emotes you can use in DC Universe for the PS3.
/Beg
/Blowkiss
/Bow
/Bringit
/Cell
/Cheer
/Chestpuff
/Choke
/Clap
/Confuse
/Cry
/Dance
/Drink
/Eat
/Evillaugh
/Excited
/Fistpound
/Flex
/Flirty
/Headache
/Laugh
/Noway
/Observe
/Pickup
/Picture
/Point
/Pose
/Read
/Rude
/Salute
/Search
/Shake
/Sleep
/Smokebomb
/Strong
/Terminal
/Thumbsup
/Walkietalkie
/Wary
/Watch
/Wave
