A Life in the Theatre (Gerald Schoenfeld, 236 W. 45, now closing Nov. 28). David Mamet’s 1977 two-man play about a pair of actors, one young and one old, who are battling for dominance over one another, now on Broadway in a production graced by a superlative performance from Patrick Stewart. Though his acting is unmistakably English in tone–Americans expect a faster pace in Mamet–Stewart is fully alive to the complicated mixture of envy and rue that his character feels as he watches his younger, more talented colleague (T.R. Knight) take flight. The results are poignant and compellling (TT).