I've got you all beat, I'm the only guy here who's ever given the Maid of Honour's speech I bet!
Actually, it was my sister's wedding and my wife is her best friend and was her maid of honour. My wife completely broke down at the podium, and being a gentleman, I stepped in a whipped off an ad-lib, skewering my wife, my sister and her husband on the way by. The funny thing is, I don't really like public speaking, I'm not terrified, but it's certainly uncomfortable. However, not having had to prepare it, and simply helping my wife write her speech, made it so I could step in without any pressure. It was actually pretty neat.
(Oh, and I totally kicked the a$$ of the best man's speech)