Here are a few folks you need to converse with:
Island Def Jam
825 8th Avenue, 28th Floor
New York, NY 10019
or email them via-
1900 "W" Place, NE
Washington, DC 20018
If you plan to write to BET (someone has to put 106 & Park out of its Coon misery) I would suggest you address letters to either Debra L. Lee (the current CEO) or Reginald Hudlin (of the Hudlin Brothers, recently named President of Entertainment and also a comic book dude, damn).
Reginald can also be contacted through his website:
2220 Colorado Ave
Santa Monica, CA 90404
And if you have been living under a rock for the last 15 years, the man to contact at Interscope is the infamous, Jimmy Iovine. More contacts to come.