Trivia: All the cast and crew (including the producer) had to undergo a grueling one week of military training (which they dubbed their 'week of hell') under the supervision of a battle hardened ex-navy SEAL. By the end most people were naturally eager to give their trainer a little of his own medicine. Miss Jovovich (Alice) did: he's the zombie she head kicks into the test-tube cabinet and then steals the gun from (before fighting the zombie dogs). What sweet justice.
Trivia: Spider-Man creator Stan Lee makes his standard cameo appearance for this film when Spider-Man and Doc Ock are fighting on the side of the building. The first shot of the street during the fight shows a woman being pushed out of the way as some debris falls; the man pushing her is Lee.
Trivia: Pom Klementieff, who plays Mantis in the Guardians of the Galaxy films, also directed by James Gunn, has a cameo here as one of the patrons inside the club on Corto Maltese.
Trivia: When Crichton talks to "Harvey" (Scorpius in his head) for the first time in the movie, Scorpius is dressed like Einstein. There is a blackboard with equations on it. One of them is "e = MC hammer". (00:21:30)
Trivia: When Buffy is cheering at the basketball game and Grueller (now a vampire) shows up we see him growling at a player from the other team. The player then tells him "Here, take it" and hands him the ball. The player from the other team (in the red) is Ben Affleck, pre-stardom.
Trivia: Kate Beckinsale's mother makes a cameo as a vampire in David's covenant. (00:33:20)
Trivia: Director Bryan Singer (X-Men among others) makes a cameo appearance on the bridge of the Enterprise. He's a non-speaking extra. When the Reman boarding party has beamed aboard and Riker and Worf leaves the Bridge to take care of the boarding party Singer is the officer who takes over Worf's tactical station. In the audio commentary on the DVD release Nemesis director Stuart Baird points out Bryan Singer's appearance and continues 'apparently he's a big fan of Star Trek'. (01:23:25)
Trivia: Stan Lee cameo: When Captain America did not come out for one of his shows, a short man came out to tell the announcer he would not be appearing. Stan Lee says "I thought he would be taller."
Trivia: After the fight in the nightclub, when Indy and Willie make their escape, the name of the club is visible as they drive away - Club Obi Wan - a reference to Star Wars, also by George Lucas.
Trivia: Stan Lee makes his customary appearance when Rocket Raccoon is sweeping the plaza for likely targets - he is seen chatting up a young lady. (00:16:00)
Trivia: Stan Lee (Stanley Martin Lieber), the original creator of this comic book hero, has his usual cameo role in this movie. He's the guy who drinks the gamma contaminated soda from the fridge.
Trivia: Director David Leitch has a cameo as an Eteon helicopter pilot. (01:43:40)
Trivia: After Tony blows off Bucky's arm, Cap picks up his shield and shields himself from Tony's blasts. At the very end of the shot, Tony is firing a beam at Cap which lands on Cap's shield and the shot begins to slow down. This moment from the shot is an homage to the cover from part 7 of the Marvel Civil War comic storyline, where Captain America and Iron Man are fighting on the front cover in the same way. (02:07:00)
Trivia: When the scientist says to the other man, "We're moving the Hubble," the long-haired man whom he is talking to is Michael Bay, the director of Armageddon.
Trivia: The $100 bill in the closing credits has the serial number DOT00002018. Which stands for Den of Thieves 2018, the year it was released. (02:24:00)