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The best thing you can watch on a theater screen this week is only 17 minutes long. And well worth the ticket price.

That's Don Hertzfeldt's indescribably wonderful animated short film "World of Tomorrow," which won Best of Show among short films at this year's Sundance Film Festival. It's the highlight of "Sundance Short Film Tour 2015," opening today at the Tower Theatre. The annual touring show this year features five other award-winning shorts, including comedy ("SMILF," "Oh Lucy"), animation ("Storm Hits Jacket") and documentary ("The Face of Ukraine: Casting Oksana Baiul" and "Object"). it's the one absolute must-see of the weekend.

The studios' product this weekend is three movies with R ratings for violence:

• "American Ultra" starts with a fun premise, of a stoner convenience-store operator, Mike (Jesse Eisenberg), who turns out to be a sleeper CIA assassin. Eisenberg and co-star Kristen Stewart, as Mike's girlfriend, are engaging and funny — but the storyline devolves into a standard action-comedy.

• "Hitman: Agent 47," based on the "Hitman" video game series, stars Rupert Friend as a genetically enhanced super-assassin on the trail of a scientist's daughter (Hannah Ware). The action is stylishly realized, but the story is one step above random chaos.

• "Sinister 2" is a sequel to the 2012 horror thriller, this time with a single mom (Shannyn Sossamon) moving herself and her twin sons into a house that has played host to multiple murders. It was not screened for Utah critics.

Jesse Eisenberg features prominently in another movie this weekend, "The End of the Tour." This thoughtful, intelligent drama recounts the 1996 interview sessions between author David Foster Wallace (Jason Segel) and Rolling Stone reporter David Lipsky (Jesse Eisenberg). Director James Ponsoldt and screenwriter Donald Margulies let the two actors inhabit these roles, as they verbally hash out issues of pop culture, art and the travails of fame.

Lastly, there's "Best of Enemies," a documentary focusing on a different intellectual conversation: The on-air debates between conservative William F. Buckley and liberal Gore Vidal during ABC News' coverage of the 1968 political conventions. The documentary relives the era in sharp detail, but misses out on a thorough examination of how the Buckley/Vidal debates presaged the media's current talking-head shoutfests.