No sample speeches, but good advice here:
http://www.confetti.co.uk/weddings/advice_idea s/speeches/father_of_the_bride_speech.asp
I don't think sample speeches are a good idea - I would much prefer an honest, 'amateur' , loving speech.
There are sample speeches here -
http://www.hitched.co.uk/speeches/examples/sho wbest.asp?type=3
Whether they are any good, I don't know. And what is good for one may be no good for you. But you can have a read and perhaps pinch an idea or two.
Most importantly - enjoy the day.