Brain Game: Filling Station #5 (with a twist!)

The Wednesday Wordplay challenge for today's mentalfloss.com Brain Game brings you a new entry in our popular new Filling Station puzzle series - but with a new quirk. While all the answers are related, this time, I won't tell you how, you'll have to figure that out on your own. Still, this one's not that tough. Enjoy!
Each of the following 5 entries can be turned into an English word or phrase by adding the letters from an English word or name - in the order it's spelled - into the blanks provided. An example (unrelated to the theme) appears below to get you started.
example: D _ Y _ R E _ _ _ solution: ADAMS (D A Y D R E A M S) 1. P R _ D U _ _ I _ N N U M _ _ _ 2. _ A _ _ D I C _ 3. C H E _ _ T H _ _ L _ S 4. _ S O _ R _ _ E _ _ 5. _ _ N G _ E G _ M
Here are the SOLUTIONS.
THE SOLUTIONS:
1. OCTOBER = P R O D U C T I O N N U M B E R
2. JUNE = J A U N D I C E
3. APRIL = C H E A P T H R I L L S
4. AUGUST = A S O U R G U E S T
5. JULY = J U N G L E G Y M
Thanks for playing. Tomorrow at the mentalfloss.com Brain Game: Think Thursday!