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.
Did he meet any stars in particular?
Among stars the young Bradbury was thrilled to encounter were Norma Shearer, Laurel and Hardy, and Ronald Colman.
Were there any other stars?
Bradbury relates the following meeting with Sergei Bondarchuk.

Question: What happened at the meeting?
Self-contained rewrite: What happened at Bradbury's meeting with Sergei Bondarchuk?