Is Greg Louganis married

No. Actually, he dove today, August 10 2010, at the US Championships:

"Greg Louganis gave us all an unexpected treat at the AT&T National Diving Championships...he took to the boards during a practice session and even performed his signature flying forward 1 1/2 somersaults pike from the 10-meter platform (and he ripped it)!" -- from US Diving's Facebook (http://www.facebook.com/pages/USA-Diving/54682452101)