Earlier in the week, "Avengers" director Joss Whedon pointed at the incredible Hulk as the most difficult of Earth's Mightiest Heroes to translate to the screen. Ask the co-hosts of Talk Nerdy, and you'll get some different opinions in the mix.
No doubt, Hulk's a tough nut to crack, but there are a lot of tricky pieces to put in place in order for "Avengers" to come out successfully. So we want to know from you: which Avenger are you most worried about Joss Whedon pulling off without a hitch? Vote in our poll and explain your choice in the comments section or on Twitter!