The Chicago revival of David Mamet's American Buffalo, directed by actor-director Mike Nussbaum, has been breaking box office records at the American Theatre Company. As a result, the production has been extended a full month until Jan. 22, 2000. Buffalo, which began Nov. 29, was to have ended on Dec. 26.

Nussbaum is, of late, awash in success in the Windy City. At nights, he is playing the title character in Visiting Mr. Green at the Royal George, a commercial run of a production which transferred from Skokie's Northlight Theatre. Mr. Green reopened at the Royal George on Nov. 19.

Nussbaum knows a little about Buffalo, having originated the role of Teach in the play's original Chicago staging. The American Theatre mounting features John Sterchi in that role, with Andrew Micheli and John Morhlein rounding out the cast.

For information of Buffalo, call (773) 929-1031.

--By Robert Simonson