After Brian’s girlfriend walks out on him and he invents time travel, a parade of future Brians shows up with one dire warning after another.

If you have a nice girlfriend or boyfriend and you are trying to crack time travel, please take this short film as a warning.

The folks behind the Nova science TV series provide a write-up of how the velocity addition formula of Einstein’s special relativity would behave at superluminal velocities

Brilliant physics student Cassandra Sinclair finds herself running from the evil Initiative Organization—which includes her childhood friend Josh and a posh lady with an English accent—who are after the equations in her thesis notes that somehow (she’s not quite sure how) launched her on multiple slips back in time (we counted eight) that may or may not result in destroying yourself by getting too close to yourself, a closed timelike curve, quantum entanglement, and/or solving the Grandfather Paradox (without ever having anything that resembles the Grandfather Paradox, quantum entanglement, or a closed timelike curve). We suspect that writer/director Kenneth Mader had been reading “Experimental Simulation of Closed Timelike Curves,” but the actual science didn’t fully translate from the lab to the silver screen.

Handy Hint: The movie is eminently more watchable in a late-night group where everyone shouts “Great Scott!” whenever a character spews a sequence of pseudoscientific quantum mumbo jumbo that vaguely resembles an English sentence.

Of the 43 children born 1 October 1989 with no gestation period, the eccentric and sometimes cruel billionaire Reginald Hargreeves brought up seven of them and turned them into the super-powered group called the Umbrella Academy when they developed powers. Nearly thirty years later, after Hargreeves dies, the five surviving members of the group gather at their family home. Oh, and: Number Six died some time ago and only Number Four can see him; Number Five disappeared about seventeen years ago, but he’s back (and in his 13-year-old body) after living 45 years in a post-apocalyptic future that’s scheduled to start in eight days.

Five’s plan for the Umbrella siblings to escape the apocalypse by going into the past ends up scattering them throughout different years of Dallas in the 1960s. They manage okay on their own until shortly after 11/22/63, when secondary effects from changes to the timeline cause a nuclear holocaust that can be averted only by recently arrived Five jumping back to 11/15/63 to exert his unique charm into getting the gang to work together.