The document discusses and provides examples of T-shaped professionals from various sources on the internet. A T-shaped professional has both depth of knowledge in their primary field or discipline (represented by the vertical line of the T) as well as breadth of working knowledge across multiple disciplines (represented by the horizontal top of the T). Examples provided discuss T-shaped skills in fields like IT, user experience design, marketing, and digital forensics. Some sources also introduce concepts of I-shaped, V-shaped, and versatilist professionals and their skills.