Smallville is excellent, I think you'll find that while it's still a teen show the writing is leagues more nuanced and natural than modern teen shows (or shows in general). It's got camp to it, but it's fun like The X-Files and Supernatural. And the acting by Michael Rosenbaum, Tom Welling, John Schneider, Annette O'Toole, and even Allison Mack (sorry, I know) are all wonderful. It has a lot of heart.