  Giant resonances--highly collective, high-frequency oscillations of the
atomic nucleus--are the focus of this chapter. We discuss the isoscalar
excitations, where the protons and neutrons oscillate in phase, up to
angular-momentum transfers $L$ = 3. The procedures of experiments and data
analysis employed in extracting the strength distributions associated with
these resonances are discussed. The experimentally extracted strength
distributions are presented, along with information on the properties of these
resonances available to date. The effect of deformation of the nuclear ground
state on the resonance strength distributions is discussed. Furthermore, the
exciting opportunities being opened with the current and future availability of
rare isotope beams the world over are expounded.
