Conversation so far:
When did Kenneth Anger return to making films?
In 2000, at the dawn of the new millennium, Kenneth Anger began screening a new short film, the anti-smoking Don't Smoke That Cigarette.
Was Don't Smoke That Cigarette well recieved?
what did Kenneth Anger do after Don't Smoke That Cigarette?
In 2009 Kenneth Anger's work was featured in a retrospective exhibition at the MoMA PS1 in New York City, and the following year a similar exhibition took place in London.

Question: after the exhibition what did he do?
Self-contained rewrite: After the retrospective exhibitions in New York City and London what did Kenneth Anger do?