  A planetary transit produces both a photometric signal and a spectroscopic
signal. Precise observations of the transit light curve reveal the planetary
radius and allow a search for timing anomalies caused by satellites or
additional planets. Precise measurements of the stellar Doppler shift
throughout a transit (the Rossiter-McLaughlin effect) place a lower bound on
the stellar obliquity, which may be indicative of the planet's migration
history. I review recent results of the Transit Light Curve project, and of a
parallel effort to measure the Rossiter effect for many of the known transiting
planets.
