Trivia: During a flashback scene, Paul is shown sitting in Hangar 51 talking to Steven Spielberg, the same hangar as seen in Raiders of The Lost Ark and The Kingdom of the Crystal Skull.
Trivia: Stick around after the movie has finished, at least 4 minutes of extra footage is shown.
Trivia: John Carroll Lynch plays Kirsten Wiig's father in the film, even though in real life he's only 10 years her senior.
Trivia: The alien claps his hands and rubs them before doing his healing ability - this is in imitation of sensei Mr. Miyagi of The Karate Kid films and series.
Trivia: When Paul, Graeme and Clive are walking down the street in the town near the RV park, there is a theater behind them that is showing the movies "Easy Rider" and "Duel." Easy Rider is a movie where Peter Fonda and Dennis Hopper play two guys on a road trip while fleeing the law, similar to the plot of this movie (although they have a drug stash, not an alien). Duel is a movie about a man who is chased down by a truck, and was the debut of Steven Spielberg, commonly referenced in this movie.
Trivia: Clive mentions to Paul he became interested in science fiction writing ever since he saw "Mac and Me." "Mac and Me" was a poorly received McDonalds ad placement 1988 E.T. ripoff film.
Trivia: Before Tara strikes "The big guy" (Sigourney Weaver) she says, "Get away from her, you bitch!" This is the same line said by Sigourney Weaver to the Alien Queen in "Aliens."
Trivia: The name of Jason Bateman, Agent Lorenzo Zoil, is a play on the title of the 1992 Movie "Lorenzo's Oil", starring Nick Nolte and Susan Sarandon.
Trivia: When Agent Zoil shoots his car radio whilst talking to Sigourney Weaver, he says "Boring conversation anyway". Harrison Ford's character Han Solo says the same line in Star Wars: Episode IV - A New Hope when he shoots an intercom while posing as a Stormtrooper.
Trivia: The Bat mobile seen in the film is the exact same Bat mobile from Joel Schumacher's Batman Forever.
Trivia: When Graeme runs after Ruth he says he has shin splints, Simon Pegg played a character in Run, Fat Boy, Run who suffered from shin splints.
Answer: When it is revealed two years later that he is alive, there is no explanation given as to how he survived the blast. Any answer would be speculation.
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