Is anyone familiar with finding out who to write @ like 60 minutes TV show, MTV, or any of the shows that do specials...

[Nocturnal]

I'm looking to find out who I write to about trying to get an idea out to the people who do the 20/20 shows, or MTV's REAL LIFE OR TRUE LIFE, does anyone know where I can go to find out like e-mail addresses, snail mail addys, etc etc?