“…For example, numerical relativity has provided vital information regarding the kick or recoil in astrophysical mergers [14,15,16,17,18,19,20,21,22,23], simulations of spin flip and precession phenomena [15,24] and the interpretation of gravitational waveforms to be observed in the future [25,26,27,28,29,30]. See also [31,32,33,34,35] for binary simulations involving neutron stars. This progress has come timely, as earthbound gravitational wave detectors LIGO, VIRGO, GEO600 and TAMA [36,37,38,39] are now collecting data at or near the design sensitivity.…”