True Colours
Summary: Jared is a mentally challenged young man with a very special gift. Jensen is an executive with nothing in his life but work. They meet by accident and discover a connection that defies explanation.
http://community.livejournal.com/muni_playground/678.html

Light My Fire
Summary: In New York, two men meet under unusual circumstances, and find themselves falling for each other. But when Jensen Ackles learns who Jared Padalecki really is, it all comes crashing down. Can Jared convince Jensen to open up his heart and take a chance on love again, despite who Jared is?
http://agt-spooky.livejournal.com/233446.html

The Christmas Wish
Summary: Jared is a mentally challenged young man who is obsessed with going to the North Pole for the first time this Christmas. Jensen works at a Christmas decorations store and has known Jared and his family for years.
http://motoque.livejournal.com/2203.html

Us Against The World
Summary: At the age of 10, Jensen had a car accident that changed his life forever. Now at the age of 30 he is trying to branch out on his own for the first time. Jared is abused and mistreated by his widowed father. Friendless and alone, he meets Jensen when the older man moves into one of his father’s apartments. Can Jensen and Jared change their lives? Together they have a chance.
http://community.livejournal.com/annie_46fic/8748.html

I would also recommend checking out annie_46fic master post, she has some great stories.
http://community.livejournal.com/annie_46fic/