It would appear that the number of nonsense triplets is rather low, since we only occasionally come across them. However this conclusion is less secure than our other deductions about the general nature of the genetic code.
When I first began doing TV pilots, my expectations were high. I didn't understand that world. So when 'Weeds' took off, I was so happy. Especially as I was just a guest star in the pilot. But once it got picked up, they made me a regular cast member.