Wow. This discussion is going everywhere.
1) Earning a Tony doesn't make you a household name. True. But I don't think anyone claimed that?
Personally, I think if you are a theater person, Roger Rees is a name you would know. If not, you should know it.
2) I was just on the phone with my mother while reading the board, so I asked her (a prime example of a tourist) who Nathan Lane was. She had no clue. I asked her who Roger Rees was. She had no clue. So whatever that tells you, there you have it.
3) Nathan Lane is extremely popular in the theater circle. Moreso than Rees. A lot more so. Thus Lane is a name that sells tickets. But he is not a household name.
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle