Rule one of possessing one of the six Infinity Gems: don't post a picture of it on Instagram, even if Marvel gifts it to you for directing its latest box-office smash.
James Gunn, the writer of Tromeo and Juliet as well as both live-action Scooby-Doo films, received one of the most powerful weapons in the universe as a birthday present from Marvel, the company that wisely handed him the reins of a movie that should not have worked at all -- Guardians of the Galaxy. Gunn turned 44 on August 5, which means I still have three years to catch up.
According to the Universal Archives (Wikipedia), the red Infinity Gem is the Power Gem, which can "Accesses all power and energy that ever has or will exist, and can boost the other gems' effects. Allows the user to duplicate almost any physical superhuman ability and grants Omnipotence." It's real ultimate power. Coupled with Gunn's obvious skill at sorcery he might be able to fend off the army of power-hungry Marvel villains doubtlessly heading his way as we speak.