Clark and Jonathan Kent's "Father-son" Moments -- (Smallville - S2; E16) 

Racing against time, Jonathan tries to save his family from a deadly Kryptonite-induced disease. Together with the sickened Clark, they aim to take back the key for the spaceship which may be the key to their salvation.
Smallville (Season 2, Episode 16 - "Fever")
Tom Welling as Clark Kent
John Schneider as Jonathan Kent
Emmanuelle Vaugier as Helen Bryce
Annette O'Toole as Martha Kent