\usefonttheme{serif}
+% Title page
\setbeamerfont{author}{family=\rmfamily}
-\setbeamerfont{footline}{shape=\scshape,family=\rmfamily}
\setbeamerfont{title}{size=\large,shape=\itshape}
\setbeamerfont{subtitle}{size=\normalsize}
-\setbeamerfont{block body}{shape=\upshape}
-\setbeamerfont{block title}{size={},shape=\upshape,series=\bfseries}
+% Frame bits
+\setbeamerfont{frametitle}{shape=\scshape,family=\rmfamily,size=\tiny}
+\setbeamerfont{footline}{shape=\scshape,family=\rmfamily}
% Use slightly more leading than normal.
\linespread{1.1}
+% These are for "Theorem" et al.
+\setbeamerfont{block title}{size={}}
+\setbeamerfont{proof title}{parent=block title,shape=\itshape}
+
% The references can be tiny.
\setbeamerfont{bibliography item}{size=\footnotesize}
\setbeamerfont{bibliography entry author}{size=\footnotesize}