The rumor mill is churning and, this time, we're hearing that actor Joseph Gordon-Levitt could assume the role of Batman when DC Entertainment brings Justice League to theaters in 2015. I can't think of a better idea.

Here's why: Gordon-Levitt's character fades off the screen in The Dark Knight Rises in a way that strongly suggests he'll don Batman's cape and cowl in future films. Adding him to the Justice League cast now would allow time for a cameo in Zack Snyder's Superman reboot, Man of Steel, when it debuts next summer. Which, frankly, is precisely what Time Warner (NYSE:TWX.DL) needs.

Just as Samuel L. Jackson introduced audiences to the character of Nick Fury in the closing moments of 2008's Iron Man -- a small set-up leading to a much larger (and more profitable) world of Marvel's The Avengers -- Gordon-Levitt's cameo could build excitement as it foreshadows the team-up to come. Find out more in the video below.

Fool contributor Tim Beyers is a member of the Motley Fool Rule Breakers stock-picking team, and the Motley Fool Supernova Odyssey I mission. He owned shares of Time Warner and Walt Disney at the time of publication. Check out Tim's web home and portfolio holdings, or connect with him on Google+Tumblr, or Twitter, where he goes by @milehighfool. You can also get his insights delivered directly to your RSS reader.

The Motley Fool owns shares of Walt Disney. Motley Fool newsletter services have recommended buying shares of Walt Disney. The Motley Fool has a disclosure policy. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. Try any of our Foolish newsletter services free for 30 days.