  In rapidly rotating stars Coriolis forces and centrifugal deformations modify
the properties of oscillations; the Coriolis force is important for
low-frequency modes, while the centrifugal deformation affects mainly p-modes.
Here, we discuss properties of g- and r-mode oscillations in rotating stars.
Predicted frequency spectra of high-order g-modes (and r-modes) excited in
rapidly rotating stars show frequency groupings associated with azimuthal order
$m$. We compare such properties with observations in rapidly rotating Be stars,
and discuss what is learnt from such comparisons.
