Despite Halloween typically being a slow day for the box office, especially when it falls on a weekend, Disney's "High School Musical 3: Senior Year" managed to secure the top spot. The film, starring Zac Efron and his co-stars, saw a dramatic 90% drop from its opening week, making only $1.7 million on Friday. However, it surged back with a 400% increase on Saturday, raking in $8.2 million,...