Hello, Angela!
Planning ahead is a great way to accomplish as much as you can during your vacation in Walt Disney World! (And taking advantage of Extra Magic Hours is another way to ensure that you accomplish as much as you can while you're there, too!)
Take a look at Walt Disney World.com's list of all of the attractions which are open during
Extra Magic Hours. At Disney's Hollywood Studios, during Evening Extra Magic Hours, this includes The Great Movie Ride, Muppet Vision 3-D, Rock 'n' Roller Coaster Starring Aerosmith, Star-Tours-The Adventures Continue, Toy Story Mania!, The Twilight Zone Tower of Terror, Voyage of the Little Mermaid.
Have a wonderful trip to Walt Disney World! Be sure to send more questions as you think of them, too! I'd love to help!