For a start:
joe@msnbc.com
viewerservices@msnbc.com
You may have to keep trying - mailboxes seem to be getting full fast. ;-)
Dear Joe: You have about the only show on MSNBC that tries to be even handed with both liberal and conservative commentary. But you have to stop giving air time to radicals like L. O'Donnell who purport to be analyst and then rant and rave like lunatics. It also would not hurt your show if instead having the swarmy Ron Reagan on, you found a liberal with a brain.