% babybeamerc presentation

\documentclass{beamer}

\begin{document}

\begin{frame}
\frametitle{Overlaying lists}

We introduce our guests:
\begin{itemize}[<+->]
\item R. Padmanabhan
\item Brian Davey
\item Harry Lakser
\end{itemize}
\end{frame}
\end{document}