I love TED Talks! I learned recently that is stands for Technology, Entertainment, Design. 
I never knew that's what TED stands for. I enjoy them too! Do you have a favorite?
It is too hard to choose! I like Jane Goodall and Al Gore.
I really like the format of the talks, the speakers seem so casual and conversational. It's so engaging. 
I bet they practice endlessly to achieve that effect. 
Yes, I'm sure you're right. No one ever says "um" or "uh" -- everything comes out perfectly.
I wish I could get to this place in public speaking. 
Well, at least TED talks can be a source for inspiration.  There are also spin-offs from TED talks, one of which is TED-MED, which have a medical theme. Check them out!