  We study the charmful three-body baryonic B decays with $D^{(*)}$ or $J/\Psi$
in the final state. We explain the measured rates of $\bar B^0\to n\bar p
D^{*+}$, $\bar B^0\to p\bar p D^{(*)0}$, and $B^-\to \Lambda \bar p J/\Psi$ and
predict the branching fractions of $\bar B^0\to \Lambda\bar p D^{*+}$, $\bar
B^0\to \Sigma^0\bar p D^{*+}$, $B^-\to\Lambda \bar p D^{0}$, and $B^-\to\Lambda
\bar p D^{*0}$ to be of order $(1.2, 1.1, 1.1, 3.9)\times 10^{-5}$,
respectively. They are readily accessible to the $B$ factories.
