Here's what's happening today in pop culture:
• "Iron Man 3" opened with a massive $175.3 million at the box office this weekend. That's the second biggest opening of all time. (No. 1 was "The Avengers" last year.) [Box Office Mojo]
• In a rule change that could expand the voting bloc for short and foreign-language Oscar contenders, Academy voters will be able to watch DVD screeners instead of having to attend official theater screenings. [The Hollywood Reporter]
• Thank God that awful [redacted; team I hated] didn't win "The Amazing Race." [Entertainment Weekly]