FFX, Grandia (1,2 or3), Star ocean (1,2 or 3)
Grandia is most accessible IMO perfect mix of action/strategy
FFX is turn based, old school with some twists (ability to swap in/out party members during battle)
Star ocean is Real time only control one character at a time, the AI for your partners is pretty good.
Grandia is a mix since action stops when you are making choices (otherwise it has a timer after which a character can act so somewhat turn-based).