Actually, and going serious for a sec, what I loved about Lex as opposed to other villains is that he was extremely subtle. Only Superman saw who he truly was, and even Lois was totally fooled. His strategy was perfect; he led a double life, looking like a great benefactor to the public eye while leading crime in Metropolis. And since he let Nigel hire goons to do the dirty work and got rid of said-goons once the deed was done, he didn't run a risk of being figured out.
That's why I think that Lex was truly fascinating. Not to mention the fact that John Shea played him to perfection.
Kaethel