Here's what's happening today in pop culture:
• Justin Timberlake and Macklemore share the lead in nominations for the MTV Video Music Awards, with six each. [Vulture]
• A mix of heroin and alcohol is blamed in the death of "Glee" star Cory Monteith. [AP, via The Salt Lake Tribune]
• Keith Olbermann is coming back to TV. The sportscaster-turned-political commentator has made a deal to return to sports, with a late-night show on ESPN2. [The Hollywood Reporter]