Greatest studio audience laugh moment

I can't think of that without thinking of this one too--they're a matching set! May not count for this thread since this is an outtake and not the final aired version but still a fun moment..

 

Belafonte at Carnegie Hall when he asked about women over 40+ in the audience.

 

The 'That's my Boy?' episode of The Dick van Dyke Show. The interviews on the DVDs/Blurays mention it being the biggest laugh they'd ever experienced, that it went on for some ten minutes (edited in broadcast obviously) and turned to applause, back to laughter, back to applause, etc.