old film pioneer Hal Roach was honored the producers  decided to have him give his acceptance speech from his seat.  However, he didnt have a microphone and not realizing this  proceeded to speak anyway. The home audience (and 95% of those in  the auditorium) watched him speak though they heard nothing. The  gaffe was quickly covered by host Billy Crystal who said, "I think  thats appropriate because Mr. Roach started in silent films."