How many movies have Derek Rozmes and Randy Thom collaborated on?

They have worked on 3 movies together! Their first movie together was Ice Age: The Meltdown (2006) while their highest rated movie together was Ice Age: Dawn of the Dinosaurs (2009). They have not worked together since Epic (2013). They are most known for their adventure films together.

Epic (2013)

Crew
Lead Animator
Crew
Sound Re-Recording Mixer
Role
Additional Voices (voice)

Ice Age: Dawn of the Dinosaurs (2009)

Crew
Animation
Crew
Sound Re-Recording Mixer
Crew
Sound Designer

Ice Age: The Meltdown (2006)

Crew
Animation
Crew
Sound Designer
Crew
Supervising Sound Editor
Crew
Sound Mixer