Question: Why is it so common for Apple Computers to find their way into TV and movies? 

Answer: It's easy : Design!!! The set designers on TV appreciate good design, and the Macs are almost always on the cutting edge of computer design. They are sleek, attractive looking machines. Witness the I-mac vs the boring beige win-boxes of it's time!
This question from the Yahoo Q&A forum is categorized in the topic: Family & Relationships