Bonus Feature:

Disc 1) Go in the S.H.I.E.L.D. Data Vault and enter the Personnel Dossier. You must click on each one: the Howard Stark, The Ten Rings, and Steve Rogers file then go right and another box pops up in their dossier it's classified SHIELD files. The Howard Stark classified file can also be accessed through the Project Iron Man section. * Egg reported for 2-Disc Blu-Ray that can't be found.

Behind the Scenes:

Disc 2) In the Ultimate Iron man menu scroll down to Building A Legacy go to your right and it should highlight in green the blueprint right underneath. Filming of Thor's hammer. * Egg reported for 2-Disc Blu-Ray that can't be found.

All easter eggs were generously submitted by SirDonk