I haven't seen Smallville myself, but my favourite version of the Superman universe is "Lois & Clark". One of the things I like about it is that it focuses on Clark Kent as Clark Kent; it isn't that Clark Kent is the secret identity of Superman, but that Superman is the secret identity of Clark Kent. As a consequence, this also enables one to see more of Jonathan and Martha Kent than one normally would in a Superman story where Clark is grown up and no longer living at home, because this version shows that Clark still has a close loving relationship with his foster-parents, and they get screen-time, rather than being forgotten. I love this version of Jonathan and Martha; they are awesome characters in their own right. Jonathan is what one would expect, a strong, steady, traditional farmer. Martha, however, is unusual (and a hoot) in that she's Jonathan's opposite: non-traditional, always learning new things, and an environmentalist. But it's also very clear that they love each other, and that it's been a strong and stable relationship for many many years. I love 'em.