I went to Amsterdam back in 2006 for the Gong Family Unconvention. It's basically an entire weekend of bands featuring the various member and former members of Gong. The weekend was capped by the first performance of The Steve Hillage Band in 17 years, which segued into a 2 and a half hour Gong performance with all the surviving members of the You era lineup.
I've seen them about five other times besides that, including when they played at NEARfest last year.
Awesome band. Be sure to check out Steve Hillage's solo albums, particularly Fish Rising, L, and Motivation Radio.
"What can I tell you that you don't already know?
"Today is only yesterday's tomorrow"
"Rock n roll is the art of imperfection"