Conversation so far:
How much money has he made?
He could have earned up to $30 million each year depending on ratings for Leno, compared to a $20 million annual salary during his last years at Tonight.
How long was did he work for NBC?
Leno had a contract for five years  for the show.

Question: What other financial impact did the show have?
Self-contained rewrite: What other financial impact did The Jay Leno Show have aside from Leno earning up to 30 million each year?