As soon as Sony revealed that a sequel to Zombieland is in the works, Digital Spy basically had a head rush of all things Tallahassee, Columbus, Wichita and Little Rock. If those names just sound like places to you, then you're reading the wrong article: this one's for the Z-heads.

Here are ten things you never knew about the greatest zomcom America has ever produced.

1. Woody's cheese ban

Woody Harrelson insisted on two very specific conditions before signing up to play ass-kicking Twinkie-lover Tallahassee: first, that the film's set be environmentally responsible (Harrelson is a major eco-guy), and second, that the film's director Ruben Fleischer give up dairy products for a week. Fleischer said it was "like for an alcoholic not to drink."

2. Bill Murray wasn't the first choice for that cameo role

In earlier version of the script, Patrick Swayze was first choice to play the celebrity who the gang encounter in LA. He was even due to recreate the Potter's Wheel sequence from Ghost, which later became Murray's Ghostbusters-with-a-Hoover riff in the finished film. Other celebrities reportedly considered include Sylvester Stallone, Joe Pesci, Mark Hamill, Dwayne Johnson and Matthew McConaughey.

3. Abigail Breslin (Little Rock) celebrated her 13th birthday on location in Georgia by adopting a shelter puppy as a present to herself.

The dog makes a cameo appearance as Tallahassee's imaginary flashback pet.

4. Tallahassee's hat was made from bits of old truck

Woody Harrelson's distinctive hat was made by a bespoke company in Brazil who fashion headwear from truck tarpaulins using the wire from truck tyres.

5. Until World War Z, Zombieland was the highest-grossing zombie movie in history.

It took $60.8m in 17 days, topping out around $102m (about £70m).

6. Woody got really deep into character

Soon after filming, Harrelson was arrested in New York after allegedly assaulting a photographer at the airport. He claimed that he was still in character and thought the paparazzo was a zombie. (Lucky he didn't give him the double tap.)

7. Emma Stone was originally cast as 406, Columbus' neighbour.

But she was just too good to keep to a one-scene supporting performance, and the role eventually went to Amber Heard.

8. So that's why he paints a "3" on his cars.

For ages we thought there were deleted scenes featuring cars marked "1" and "2", but the "3" is a reference to the late NASCAR driver Dale Earnhardt, whose cars were similar colours and always bore the number 3.

9. That's not my name

Originally, Columbus, Tallahassee and Little Rock were called Flagstaff, Albuquerque and Stillwater. Wichita was Wichita. Sounded right, we guess.

10. There are five other "rules" that didn't make the final cut:

#6. "Cast iron skillet" – "Zombie takes one of these to the head, he ain't getting up."

#12. "Bounty" - i.e. paper towels. "If there is one word to describe Zombieland, it is 'moist'."

#15. "Bowling ball" "Nothing says massive head trauma like a bowling ball."

#29. "The Buddy System." - i.e. having each other's back.

#33. "Swiss army knife" – "The Swiss army use that knife for a reason."

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