I know, but those examples were not mentioned in the show. Since Amy was mentioned long before she entered the show, I just thought they might have done something with it. I don't think the show would have been worse, if the story about Blossom had been a way for Amy to get through school. It would have been almost the same I think.
In season one episode 13, Raj suggests to get "tv's Blossom", to help them with winning the physics bowl, because "she has a degree in neuroscience in real life" . So, if they all know who Mayim Bialik is, since she plays tv's Blossom, then why is she not recognized when she gets on the show as Amy? When other famous people are playing themselves, such as will wheaton, then why is Amy not recognized as Blossom? Just a thought.