We seem to have developed a habit of clapping at let's say, inoppurtune times.
You really should not be clapping :-
1. In Church - It's a SERMON not a SPEECH. Unless you are listening to John "Fat Man" Hagee.
2. When someone introduces you on a TV show - See Chelsea Handler's nightly panel.
3. When watching a comedian - You are supposed to be laughing - applause can so easily be patronizing condescension.