It's like shopping in a grocery store. If you present them with 25 different types of strawberry jam, they become less likely to buy any at all. Because the mental cost of weighing options to make a decision outweighs the expected value.
Same goes for employee savings plans. Employees given too many options for saving plans become less likely to choose a plan at all.
View your user interface as a decision tree. At each level, don't make me decide between more than 5 elements at a time.
Using this logic, I would chunk your Recent Movie Reviews and Recent Music Reviews into one Recent Reviews element to reduce complexity, to move decisions to a lower tree.
But make sure they don't keep deciding between Music\Movies in a bunch of child nodes, they should only make that decision once: Do-No-Repeat yourself philosophy.