While Paul Lewiston (Rene Auberjonois), senior partner and ex-marine Brad Chase (Mark Valley) and lori colson (Monica Potter), junior partner, fight to maintain the firm`s high reputation, the appearance of Shirley Schmidt (Candice Bergen), founding partner, elevates Boston Legal to an even higher level of serio-comic perfection. Schmidt, a former denny Crane flame, arrives in episode 11 (aptly titled…