Here's a few random ideas. Forgive me if they've been mentioned and feel free to hate them (-:

Have Obi-Wan use the force to go back in time to save Qui-Gon, while this music plays. Then, show that Qui-Gon just died again.
Have this music play whenever the battle droids appear.
Add in a few Terminators among the Battle Droids.
Have "The Power of Love" play when Anakin meets Padme.
Have "If You Leave" or "Don't You Forget About Me" play when Anakin says goodbye to Padme since he's joining the Jedi Order.
Use some Samuel Jackson lines from other movies. Kinda like this guy did for Episode III.
Throw in some Indiana Jones music during the Pod Race.

What can I say? I'm stuck in the 80's.