1.) Sounds a bit like Christopher Lambert's Fortress.
It's not Fortress, remember I said '80s movies...not '90s movies; and anyways I've tracked them down as can be seen below:
1) 984 - Prisoner of the Future
(1982; TV): A corporate executive is taken prisoner by an underground organization known as The Movement, and is turned over to a ruthless interrogator.
2) Midnight Offerings
(1981; TV): Vivian has magic powers. She doesn't hesitate to save her boyfriend David from failing in school by murdering teachers. However, David has gotten tired of her and is putting his charm on a new girl in school, Robin. Robin discovers that she also has magic powers, and it comes to a mental struggle between the two women over David.
3) Hands of Steel
(1986): A story about a cyborg who is programmed to kill a scientist who holds the fate of mankind in his hands.