Gatland's tenure at the Ireland helm brought mixed results with 18 wins, 19 defeats and one draw between 1998 and 2001.

BBC: Ireland v Wales

Although Lhota was seen as a voice of reason in that Republican administration and was one of few Giuliani officials who was praised in the liberal Village Voice, his tenure turned out to be a mixed blessing.

FORBES: Mayor of New York, a Helluva Brand

During Schmidt's tenure, Google also bought video-sharing site YouTube and branched out into other areas, with mixed results.

CNN: Why did Google's Eric Schmidt step down?