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Kate McGregor-Stewart
The name Kate McGregor-Stewart is not widely recognized as an actress, despite high-profile supporting roles in films such as "Father of the Bride" (1991) as the mother of the groom opposite star Steve Martin or in "The School of Rock" (2003) as one of Jack Black's fellow teachers. However, McGregor-Stewart had more of an effect on the acting world as a noted acting coach, working with big names like Lucy Lawless, James Gandolfini, and many more.