I know 'The Tudors' is not historically correct to a gnat's eyebrow ....
But the basic happenings did happen. The divorce of Henry from Catherine of Aragon, the confiscation of church property, the beheading of two wives plus the beheading of two Chancellors all happened. Poetic license was taken and characters were invented, but these didn't bother me that much. Henry's physique did bother me somewhat when I knew from Hobein pictures that Henry was actually very fat.
Even though the actor didn't resemble Henry at all, he was good at portraying the much married king. Maybe Henry said that happilly married is an oxymoron.
One thing I tried to find out about was the execution of Cromwell. Purportedly, the executioner was bought large quantities of wine the night before the execution by some other of the king's advisors. Consequently, he was still inebriated at the execution and tried three times to knock off Cromwell's head before a tower guard took over and severed his head. Sometimes it is suggested historically when an execution is botched, but I couldn't find anything on this.
When you allow a movie to excite your passion when not in compliance with historical fact, you limit your enjoyment. As long as events are chronologically corect, I overlook the small things inserted for dramatic effect.