In this talk I would like to discuss the problem of excitation of normal modes in rotating stars and giant planets on highly eccentric orbits as a result of tidal interactions and an associated transfer of energy and angular momentum. I am going to specify conditions on orbital parameters of such systems determining their secular evolution due to tides, in particular, leading to a persistent decrease of orbital eccentricity - the so called orbital circularisation, and corresponding circularization time scales. The developed theory will be applied to the problem of formation of 'Hot Jupiters' - giant planets having quite small orbital periods of the order of a few days and orbital planes, which can be misaligned with equatorial plane of the host star.