> And for tabulars?  All my tabulars stick a bit out of my page.  This
> because there are long sentences in it.

Use the p column specifier instead of l:

\begin{tabular}{lp{5cm}}
  column one & column two \\
\end{tabular}

You can also use the `tabularx' environment (from the package with the same name) instead. It will provide an X specifier which will adjust the column width automatically.

Magnus