Innocuous Alternate Universe

 Twin Brothers, hand in hand

Supernatural's

Pilot Episode was first aired September 13, 2005.

Season 2 was aired September 28, 2006.

Season 3, on October 4, 2007.

Sam is being played by Jared Tristan Padalecki.  

Dean is being played by Jensen Ross Ackles.

Sam Winchester was born on May 2, 1983/ Jared on July 19, 1982. Sam has brown eyes and hair. 6"4 in height and 180-190 lbs  in weight. Jared has green-colored eyes. Is currently dating actress Sandra McCoy. 

Sam's dead girlfriend in the series, Jessica Moore was born January 24, 1983. Dean too was born on the same date.

Dean Winchester was born on January 24, 1979/ Jensen on March 1, 1978. 6"1 in height and 175 lbs in weight. He has dark blonde hair and green eyes. Jensen has green eyes. He is dating One Tree Hill star Elta Daneel Harris.

Mary Winchester was played by actress Samantha Smith.

John Winchester was played by Jeffrey Dean Morgan.

Supernatural's creator is Eric Kripke. The show is  originally about a reporter scooping around for the paranormal but Kripke switches it to brothers on a roadtrip-hunting what killed their mom instead.

The Winchesters are supposedlly the Harrisons. And John was supposedly Jack.

Disclaimer: Supernatural, Sam & Dean Winchester were created and belong to Eric Kripke.