Here are some resources to give you some tips and ideas about public speaking, plus some examples of great speeches.
TED talks This is the TED homepage.
Anna Bligh's Speech About the Floods
How to Give a Good Speech Gerald Pauschman
This is an Australian video that features examples of speaking techniques. It has short pieces from great speakers such as Martin Luther King and John F. Kennedy to demonstrate what makes a great speech.
Public Speaking Tips Gerald Pauschman
How to be Confident While Speaking Caroline Goyder
There is 30 seconds of advertising before the video starts. Caroline Goyder gives some down to earth tips, telling people that fear of public speaking is normal. She also talks about how to structure a speech.
Gough Whitlam's Dismissal Speech 1975 You can listen to a passionate speech from Gough Whitlam. It is when he was dismissed as Prime Minister, on the steps of Parliament House.