If it’s any time in December (and possibly November), just turn on the TV and this Christmas classic will show you an alternative past without George Bailey, but there’s no time travel to that past or any other—just viewing.

Detective-Lieutenant Gene Trimble suspects that the recent spate of suicides and violent crime is somehow connected to the discovery that the many worlds interpretation of quantum physics is real and each of those worlds can be traveled to.

Silverberg’s introduction to “Trip” in the collection Trips, vol. 4 of the Collected Stories of Robert Silverberg (Subterranean Press, 2009), states that he wrote the story with the goal of being the ultimate alternative universes story, and he lived up to that goal, devising nearly a dozen alternative Bay Area universes for his hero Cameron to express his wanderlust. Admittedly, there’s no actual time travel because the story was part of an anthology of ultimate sf, and Silverberg left the time travelin’ to Philip K. Dick’s “A Little Something for Us Tempunauts.” But there is a world that Cameron thinks is a 1950s San Francisco (it isn’t) and there’s a chance that Cameron experiences the passage of time at rates that differ from world to world.

Warning: The first publication of the story in that ultimate anthology (Final Stage: The Ultimate Science Fiction Anthology) was “cut to shreds” by a ham-handed editor at Charterhouse, so your best bet is to read it in one of Silverberg’s later collections.

Literature professor John Baird and conman Sylvester Castlemaine hatch a plan to get rich forging Hemingway’s lost stories, but before long, Baird is confronted by an apparent guardian of the many timelines in the form of Hemingway himself.

As a middle child stuck between two sets of twins, eleven-year-old Miri Gill feels an outsider until one day in her attic room, she slips back in time from the 21st century to 1935 where she meets Molly, another eleven-year-old who needs her help.

Also in need of some help is the model of time travel in the story, which is a mishmash of popular representations that no person at age eleven or elsewhen should be exposed to. Specifically, I would have enjoyed an attempt to square the Branching Timeline implied by the hole in floor with the single nonbranching, static timeline and Ex Nihilo paradox hinted at by the time-travel device. I truly liked that ex nihilo paradox, and wish it had been explicitly dealt with rather than swept under the carpet.

We convinced the ITTDB muckety-mucks to include La La Land in our list based on James Bojaciuk’s impassioned argument that Mia and Seb’s love is “so deep they not only broke time, [but] in the space of a few minutes they lived an entire year and decided on what their destiny should have been.” Is it actually time travel? Probably not, but take a look at Bojaciuk’s blog and read the cited quotes from writer/director Damien Chazelle before you commit yourself to saying no to Mia, Seb, and La La Land.

Secret police agent Kamal teams with his sister-in-law Nisreen, fleeing through time from pursuing gunmen who killed Nisreen’s family because toprotect the secret that their world was created by a violent temporal disruptor who altered history in favor of an autocratic Islam theocracy.

The seventh incarnation of Agent 3203 is once again tasked with preventing a thoughtful assassin from carrying out a political mission for the good of humanity.

The Watcher tells us of a universe where a change in a single decision made Peggy Carter (rather than Steve Rogers become the Allies’ super-soldier. Like Steve, Peggy also managed to find her way into modern times via a technique that’s related to time travel.

In an alternate history leading up to a 1945 atomic bomb in southern California, young Billie “the Kid” Davis grows up in the mid-20th century, playing shortstop better than any of the boys, flying B-25s with her Dad, and eventually—with Moe Berg and the woman-with-many-names—taking on that bomb.

As we all know, when the world’s formost surgeon, Doctor Strange, lost the use of his hands in a car wreck, it prompted him to search out mystic treatments and eventually become the Master of the Mystic Arts. But what if he had lost something else in that wreck?