There are three major educational paths that can be followed to become a Registered Nurse. A student must successfully complete one of these degree programs to be eligible for the NCLEX-RN licensing examination. Once a student passes this exam they are able to practice as a Registered Nurse (RN).
In the ongoing TV series Smallville, Clark Kent (Tom Welling) is initially portrayed as being a shy teenager who is very unsure of himself. At the start of the series he is unaware of his origins or of any future powers he will develop.
Dr. Curtis Knox is played by Dean Cain, who played Clark Kent/Superman in Lois and Clark: The New Adventures of Superman. Dr. Curtis Knox's initials are C.K, just like Clark Kent's. This is an homage to Dean Cain's role as Clark Kent on Lois and Clark (on that show, C.K is what Jimmy Olsen called Clark Kent ). Knox's powers and abilities are similar to those of Vandal Savage, infamous DC Comics immortal, who often used aliases.