A revival worth its salt should always bring fresh revelations, even when it’s set in a bygone era. In “Who’s Afraid of Virginia Woolf?” at the Denver Center, that discovery comes by way of the character George. He, along with wife Martha, are if not the first couple of battling parlor dramas, one of the most titanic and influential ones. Those of us indelibly marked by Mike Nichols’ and Edward Lehman’s 1966 film adaptation of Edward Albee’s domestic trauma drama (winner of the Tony for best play in 1963) may feel that Martha was the eye of that hurricane.