Quoc: The actors who collaborated with Burton the most frequently are Johnny Depp, Helena Bonham Carter and Christopher Lee, who all appeared in eight, seven and six films, respectively.

How many times has johnny depp and tim burton worked together?
HW Chung: OK, some thoughts:
The relevant sentence in the passage is: The actors who collaborated with Burton the most frequently are Johnny Depp, Helena Bonham Carter and Christopher Lee, who all appeared in eight, seven and six films, respectively. The answer is eight.