#1 - Transformers - 13.7 million units
#2 - Happy Feet - 13.5 million units.
#3 - Pirates of the Caribbean: At World's End - 13.2 million units
#4 - 300 - 12.9 million units
#5 - Shrek the Third - 12.2 million units
#6 - Ratatouille - 12 million units
#7 - Harry Potter and the Order of the Phoenix - 10.1 million units
#8 - The Departed - 8.9 million units
#9 - Night at the Museum - 8.7 million units
#10- The Bourne Ultimatum - 7.4 million units