Thursday's ratings recap:
* 8 pm/ET
* 9 pm
Grey's Anatomy was the night's most watched program, as 15.33 million RSVP'd for not-Meredith's wedding. With CSI dipping 720 thou to 14.57 mil, this marks the first time Grey's has outdrawn the CBS procedural in total viewers since Nov. 1, 2007. Grey's also outperformed CSI in the key demos by its widest margin in two years - 51 percent.
* 10 pm
Michael J. Fox's Optimistic special started strong and averaged 10.6 mil for the hour, but ultimately got bested by CBS' CSI repeat come 10:30. NBC's recently renewed Southland slipped 180K, to 6.5 mil.