If you find yourself in need of a speaker - be it motivational for your workers, or a more ’social’ after dinner speech, give a thought to hiring celebrity speakers.
International Speakers is a site setup purely to help bridge the gap between executives, and professional speakers/media celebrities.
If you know exactly what sort of speech you require, you’ll be able to browse their listings quite quickly, and find the person you need. You can also request a rating/profile for some of the speakers, if you want to check that their style of delivery and see what their strengths are.

Not having heard many motivational speakers first hand, I decided to head for the celebrity section, and discovered that Jay Leno was available. I imagine he may charge well, but the prestige attached to having someone of that stature at your own event would surely generate enough publicity to return the investment, and thats before you’ve even taken into consideration the effect his speech will have on your own staff.
So, the next time you need to find someone to speak at your event, give the International Speakers site a visit, and see just who could appear for you.