THE LION IN WINTER A royally entertaining match of wits and wills, with Treat Williams as a ruggedly charismatic King Henry II and Jayne Atkinson skillfully blending fire and ice in her portrayal of Eleanor of Aquitaine. Director Robert Moss demonstrates a sure hand as he guides a strong ensemble through James Goldman’s 1966 play. Through July 13. Berkshire Theatre Group, Stockbridge. 413-997-4444, www.berkshiretheatregroup.org
THE TWO GENTLEMEN OF VERONA An early Shakespeare comedy in which one of the gentlemen of the title becomes smitten with the other’s beloved, and knavery ensues. This production, featuring a five-piece jazz band, is described as “inspired by Rat Pack-era Vegas.’’ Free. Through July 28. Commonwealth Shakespeare Company. Boston Common. For reserved chairs, which cost $35, or additional information, 617-426-0863, www.commshakes.org Full story for BostonGlobe.com subscribers.