Summer is here. The monster grosses of "The Hangover Part II" and "Pirates of the Caribbean: On Stranger Tides" prove that we are firmly back in tentpole territory. Yet sandwiched between such known commodities such as Green Lantern and Capt. Jack Sparrow are a handful of up-and-coming young actors yearning to break big. Moviegoers may be unfamiliar with hunky Sebastian Stan, funny man Charlie Day or muscle-riddled ...