Avengers' Mark Ruffalo Says Costar Robert Downey Jr. 'Thinks I'm a Little Insane'

Mark Ruffalo and Robert Downey Jr. are bros, on-screen and off.

The pair star together in Joss Whedon’s Avengers: Age of Ultron and got a bit crazy together during filming.

Joss Whedon Calls Upcoming Jurassic World Film 'Sexist'

While many are anxiously awaiting the summer release of Jurassic World, not everyone is an unreserved fan of the big-screen sequel – specifically, director Joss Whedon.

Hollywood Outraged After South Carolina Police Officer Charged with Murder in Black Man's Death

Celebrities are speaking out after a South Carolina police officer was charged with murder in the shooting of 50-year-old Walter L. Scott on Tuesday.

Go Behind the Scenes of Avengers: Age of Ultron with Chris Evans, Robert Downey Jr. and More! (VIDEO)

Get a First Look at the New Season of Marvel's Agents of S.H.I.E.L.D. (PHOTO)

What a difference a year makes.

When Marvel’s Agents of S.H.I.E.L.D. premiered last fall, the Marvel Universe had yet to be rocked by the fact that the secret agency had been infiltrated by spies – a shocker not revealed until the blockbuster movie Captain America: The Winter Soldier in April. But the ramifications of that infiltration have altered the course of the Joss Whedon-created ABC drama.

Scarlett Johansson Hides Baby Bump with Fashion and Stunt Doubles in Latest Avengers Movie

Scarlett Johansson may be pregnant, but moviegoers will be hard-pressed to find any indication of her burgeoning belly when Avengers: Age of Ultron hits theaters next summer – thanks to a little strategic planning by director Joss Whedon and company.

ABC Upfronts Bring Monster Enemies and Monster Laughs

PEOPLE Review: The Avengers Saves the Day!

Superheroes have it easy: We only expect them to save the planet every now and again. Superhero movies, though, have the daunting task of illuminating our souls.

Dazzling effects, strong stories and bold heroes mean bubkes unless they inspire us. Thank the gods, The Avengers is just what it ought to be – inspired.