Fancy chapter headings with TikZ

You can use pgf/TikZ together with titlesec to produce fancy chapter headings. The result is this small compilable demonstration example:

\documentclass[svgnames]{report}
\usepackage{tikz}
\usepackage{kpfonts}
\usepackage[explicit]{titlesec}
\newcommand*\chapterlabel{}
\titleformat{\chapter}
 {\gdef\chapterlabel{}
  \normalfont\sffamily\Huge\bfseries\scshape}
 {\gdef\chapterlabel{\thechapter\ }}{0pt}
 {\begin{tikzpicture}[remember picture,overlay]
   \node[yshift=-3cm] at (current page.north west)
     {\begin{tikzpicture}[remember picture, overlay]
       \draw[fill=LightSkyBlue] (0,0) rectangle
         (\paperwidth,3cm);
       \node[anchor=east,xshift=.9\paperwidth,rectangle,
             rounded corners=20pt,inner sep=11pt,
             fill=MidnightBlue]
             {\color{white}\chapterlabel#1};
      \end{tikzpicture}
     };
  \end{tikzpicture}
 }
\titlespacing*{\chapter}{0pt}{50pt}{-60pt}

\begin{document}
\tableofcontents
\chapter{Introduction}
Text
\chapter{Main}
\section{Section}
Text
\begin{thebibliography}{99}
\bibitem{Test} test reference
\end{thebibliography}
\end{document}

See also pdf output of this example.
Reference: http://texblog.net