  Hot Jupiters are new laboratories for the physics of giant planet
atmospheres. Subject to unusual forcing conditions, the circulation regime on
these planets may be unlike anything known in the Solar System. Characterizing
the atmospheric circulation of hot Jupiters is necessary for reliable
interpretation of the multifaceted data currently being collected on these
planets. We discuss several fundamental concepts of atmospheric dynamics that
are likely central to obtaining a solid understanding of these fascinating
atmospheres. A particular effort is made to compare the various modeling
approaches employed so far to address this challenging problem.
