This YouTube video reveals the research and truth about motivation. During the video he uses a software company named Atlassian to show the benefits of self-directed work.
Once a quarter employees are allowed to work on anything they want for 24 hours, and in a party atmosphere they show what they did in that timebox. This 24 hour period produces new ideas, bug fixes, and features that never would have seen the bright of day without self-directed work.
If your company is interested in an excellent enterprise wiki, check out Atlassian's Wiki, Confluence.