Recent observations of the “giant” radio pulses received from the Crab pulsar are reviewed. The frequency range over which they have been detected spans at least two decades, and individual pulses appear to have a frequency span of 3:1 or more. The pulse structure is dominated by scattering at frequencies below about 2 GHz; at higher frequencies the intrinsic pulse width is about 1 µs with nanostructure extending down to 10 ns. The polarization structure may be contaminated by scattering at low frequencies and the polarization is weak and highly variable at high frequencies. No definitive emission mechanism with testable hypotheses for the giant pulses has been put forth. One of the most promising, based on the collapse of plasma solitons, predicts nanostructure bandwidths narrower than what is seen for the giant pulses themselves, though the observations do not show wideband correlation of the shortest resolvable intensity structure.