Watch the highlights of Friday night's extraordinary game at Villa Park, where the hosts scored three goals late on to earn a point.
United had seemingly been heading for a convincing win, which would have taken them top of the Sky Bet Championship, after skipper Billy Sharp scored his second hat-trick of the season.
But Villa, struggling for long periods, staged a dramatic turnaround after newcomer Tyrone Mings sparked off their recovery in the 82nd minute.
Four minutes later Tammy Abraham added a second with substitute Andre Green salvaging a face-saving draw.
Sharp's inspirational goalscoring had earlier been the major difference between the two teams.
Click on the video above for the full highlights.