What classes are you with?
Assassin's only real CC is Mind Trap, which must be used from stealth on an enemy that's not already in combat. It also cannot be used on droids.
Operative's have sleep dart (same as Mind Trap), but also Slice Droids which can CC a droid for 60 seconds. Slice Droid can be used any time.
Sorcs can use Whirlwind that lasts 60 seconds (Assassin's have this ability too, but it only lasts 8 seconds for them).
I'm not sure about the rest, as these are what I most frequently run with.
Jedi Knights, Smugglers and Tank Troopers so far.. havent grouped with a counsilor as of yet