  Following Rosner [hep-ph/0312269], we consider B-decay production channels
for the exotic I=0 and $I=3/2$ pentaquarks that have been recently reported. We
also discuss new search channels for isovector pentaquarks, such as the
$\Theta^{*++} (\bar s duuu)$, that are generically present in chiral soliton
models but were not observed in recent experiments. Futhermore, we argue that
weak decays of charmed baryons, such as the $\Lambda_c^+$ and $\Xi_c^0$,
provide another clean way of detecting exotic baryons made of light quarks
only. We also discuss discovery channels for charmed pentaquarks, such as the
isosinglet $\Theta_c^0 (\bar c udud)$, in weak decays of bottom mesons and
baryons. Finally, we discuss prospects for inclusive production of pentaquarks
in $e^+ e^-$ collisions, with associated production of particles carrying the
opposite baryon number.
