Lieutenant Barclay is a remarkably inspiring figure -- intellectually brilliant, enthusiastic, sincere and more imaginative than any other crew member.
His problem -- His anxious and nervous disposition around other people, a behavior similar to 'avoid-ant personality disorder'.
Described as a 'Holo addict', he had an excessive interest in fantasy, serving as a substitute and escape from personal interaction.
Because of this, his abilities were often underestimated and his imaginative ideas were always put down. On the episode 'Pathfinder', he discovered a radical new method to establish two-way communication with Voyager (Starship at the other end of the galaxy) through a subspace wormhole.
His boss refused to back this idea and he consequently defies direct orders, breaks into the laboratory and successfully establishes contact with Voyager.
Technically brilliant, courageous and socially awkward. I selected him because he reminds me of a bit of myself. And In my view, he is testament of the great things we can accomplish in-spite of our shortcomings.
A video below of Lt Barclay's Triumph: http://www.youtube.com/watch?v=94Hfru2pOb0
His full name: Lieutenant Reginald Endicott Barclay III