Watch both Iron Man 3 Super Bowl spots right here!
Update: Here is the actual extensive (rather than extended) Super Bowl Spot for Iron Man 3 along with the one aired before halftime.
It would appear that an early Japanese (?) copy of the Super Bowl spot has made it online. Be patient when the clip starts. The uploader placed the Super Bowl teaser spot in front of it and then sandwiched off the SB spot with the initial teaser released a few months back. Enjoy.