Warren Buffett is widely regarded for his business prowess. Showing this eight and a half minute video to your group is a good way to illustrate the success factors as Buffett sees them. You may want to stop the video following each point for a discussion dwelling on how it applies to your industry, company, or department.
Use it as an introduction to discussion or as a call-to-order following a break.
This video is especially useful when dealing with these topics: