Adding to my list of cultural centres I follow is @america.
This american cultural centre is quite active in providing various events. Some are just for fun (such as free concerts, cooking lessons), some are more serious (discussions on entrepreneurship, politics etc.).
Recently I joined an event commemorating Walt Disney where Sketsa band and Indonesian singer Andien performed Disney songs. It was great and it was FREE!
Another thing I like about this centre is its convenient location at Pacific Place mall, 3rd floor. So before or after an event, it is easy to grab a bite to eat as you're not allowed to bring food or drink inside.
Further information, please visit their website: http://www.atamerica.or.id/.