Conversation so far:
What did Bradbury do in Hollywood?
There, Bradbury learned how to sneak in and watched previews almost every week.
Where did he sneak in?
Uptown Theater on Western Avenue in Los Angeles, the flagship theater for MGM and Fox.
What else did he do in Hollywood?
He rollerskated there, as well as all over town, as he put it, "hell-bent on getting autographs from glamorous stars.

Question: Did he meet any stars in particular?
Self-contained rewrite: Did Ray Bradbury meet any stars in particular while rollerskating all over Hollywood?