David Tennant’s shock from the loss of anonymity due to Doctor Who

Being an actor implies losing the anonymity, especially if you act in some big roles. David Tennant had grown up loving Doctor Who, and he certainly recognized the enormity of the role in pop culture, but no one can fully understand the impact of fame in their life until it hits them.
He had some help from his co-star, Billie Piper, and that’s quite good.