Less than a week after claiming an editing award at Sundance, the candid documentary Joan Rivers: A Piece of Work landed a theatrical buyer in IFC Films. Directors Ricki Stern and Annie Sundberg followed the tireless comedienne for months, assembling a glimpse at the grueling regimens and routines that built one of this era's great comedy careers. Celebrity roasts, Sacramento morning show appearances... you name it. A release date hasn't yet been set, but trust you'll hear more here once it is. [THR]