Over the years he has been asked many times about a reunion with Led Zeppelin, and Robert Plant seems to have the same answer, No.  From saying, "I am not part of a juke box" to "You can't go back" to ripping up 800 million contact....it seems like this answer is firm.  Now with his new release coming out, during interviews for it, you know he is going to still get asked some more.  Here is a really cool article on his saying "no" over the years.  Click here to read.