If what I'm talking about is something I feel strongly about or am excited about, then it doesn't bother me as much. Also I do better with speaking from an outline of the important points than with a word for word set text to speak from. That way I can 'just talk' about it instead of 'make a speech'. Somehow that helps me with the scaredness. But I do need to feel confident that I know what I'm talking about, whether it is 1 person or a whole bunch of people. Sometimes its harder to talk to just one person - like doing cold call sales - than talking to a group.