To add to my list of unoriginal clichés and tired statistics, how about we stop with the use of pointless dictionary definitions?
I visited a website yesterday for speakers, and there was the dictionary definition of "presenter," right in the middle of the page, complete with pronunciation, in case I didn't know how to say it already.
This is what I consider a space filler, or in the case of a live presentation, a time waster. Unless you truly need to define something for your audience, because it's unusual or complex, or a new concept for them, using a dictionary definition is just a cutesy way of killing time or filling space on a page.
Like a soda or a bag of chips that fills you up with lots of calories but no nutritional value, a dictionary definition takes up space in your presentation where you could be giving the audience something useful and relevant.
More on clichés and originality here:
New cliché resource
The grandmother cliché