From that instantwatch thriller list, Spanish Prisoner and The Usual Suspects are both expiring soon. (April 1 and Mar 27 respectively).
Very handy, thanks for mentioning it, cubiczee
Oh, and The Insider is available for instant now.... not exactly a thriller, but worth seeing if you haven't already.
Also, if you're a fan of Ricardo Darin, or if you saw and enjoyed Nine Queens (which was really good, but not yet available for streaming) there's another little "thriller" called Aura with the same director .... it's pretty weird, but interesting... Very dark , funny (not sure it's meant to be), the kind of movie Kevin Spacey would be in if it had been made in America instead of Argentina. Heist gone terribly wrong.
Part character study, part crime drama, The Aura follows reclusive and fastidious taxidermist Espinosa as he moves from dreaming about pulling off the perfect crime to actually planning and executing a real heist. Filmmaker Fabian Bielinsky (Nine Queens) lovingly nurtures Espinosa (Ricardo Darin), creating a complex character whose eerie frozen moments of epileptic seizure (hence the film's title) make for hypnotic viewing.