![Letterman Top Ten: A statistical analysis of 30 years of Top Ten Lists from David Letterman. Why so many Regis jokes? Letterman Top Ten: A statistical analysis of 30 years of Top Ten Lists from David Letterman. Why so many Regis jokes?](https://i.ytimg.com/vi/bsaD2h9cMzQ/mqdefault.jpg)
Letterman Top Ten: A statistical analysis of 30 years of Top Ten Lists from David Letterman. Why so many Regis jokes?
![Letterman Top Ten: A statistical analysis of 30 years of Top Ten Lists from David Letterman. Why so many Regis jokes? Letterman Top Ten: A statistical analysis of 30 years of Top Ten Lists from David Letterman. Why so many Regis jokes?](http://www.slate.com/content/dam/slate/articles/arts/culturebox/2014/12/Letterman/TopTenPolit_4_Blatt.png.CROP.promovar-medium2.png)
Letterman Top Ten: A statistical analysis of 30 years of Top Ten Lists from David Letterman. Why so many Regis jokes?
2,104 The Late Show With David Letterman Archive Photos and Premium High Res Pictures - Getty Images
![Letterman Top Ten: A statistical analysis of 30 years of Top Ten Lists from David Letterman. Why so many Regis jokes? Letterman Top Ten: A statistical analysis of 30 years of Top Ten Lists from David Letterman. Why so many Regis jokes?](http://www.slate.com/content/dam/slate/articles/arts/culturebox/2014/10/141010_CBOX_LettermanLists.jpg.CROP.original-original.jpg)