With Iron Man he debuted the Iron Man project, used it during an attack on a party Valkyrie's parents were attending, got brutally attacked by Tarene.  Probably the Iron Man project being the most important along with helping fund the new superhero team the Fantastic Four.

Plus you also have the Fantastic Four stopping their mutated friend Harvey in Las Vegas then were created to be a new superhero team through Starktech as a major sponsor.

Man Tony's been a busy young man.