Here is your topic: Top Five Best Speeches You've Ever Seen/Heard/Read. You don't have to have experienced them in person (e.g. MLK's "I Have a Dream" speech counts if you've only seen it on video), and they can be speeches of any sort—political addresses, TED Talks, academic presentations, sermons, award acceptance speeches, commencement addresses, whatever. Go!
Please feel welcome to share stories about why your Top Five picks are what they are, though a straight-up list is fine, too. Please refrain from negatively auditing other people's lists, because judgment discourages participation.