Although these two specific actors are gradually becoming more confident in the roles that they portray, what is it specifically about the 'stereotypical young adult without any confidence' that we relate to so well? Why do we view these kinds of characters as non-masculine yet identify with them and love them so much?
i.e Cera in Youth In Revolt,Juno,Superbad etc... Eisenberg in Adventureland,Social Network, Zombieland etc..