When Lara starts smashing the clock with a hammer, Hillary (the butler) uses a silver tray to protect his face. This is a reference to the games in which -while exploring Croft Manor- the player can shoot at the butler who then also uses the tray he's carrying around to protect himself.
Angelina Jolie did her own Bungee-Ballet, and according to an interview with her on the Jay Leno show, injured her ankle on the first take when landing on top of a chandelier went bad, so that part of the scene had to be done over again after she recovered.
Filming the scenes where Lara drives her Land Rover through the jungle there had to be endless re-shoots due to snakes and other wildlife falling through the open top roof. Angelina Jolie herself was reported to be terrified.
Alex West was originally named Alex Mars but because the name hadn't been cleared by the legal department it couldn't be used. Simon West decided to name the character Alex West, after his father, since he knew, that if needed, he could get legal clearance for the name.
In the much-shown previews, at one point Lara says to Powell "You might try to kill me." Powell replies that he "would never kill a lady." She replies archly "I said you'd try." That exchange doesn't appear in the actual movie.
The temple on the hill in Cambodia on which Lara lands on is Phnom Bakheng which is just outside the South Gate of the city of Angkor Thom. Next, when we see her drive her Land Rover off, Lara is at Bayon, at the center of Angkor Thom. The temple with trees overgrown on it, where Lara falls into the hidden tomb, is Ta Prohm.
Lara has been given several gadgets in the film which are specific nods at certain gameplay features (of the Tomb Raider game and games in general) - among them the reloader belt or back pack (allowing her to reload her guns very quickly and without fidgeting about with clips or bullets) and the back pack itself (which almost mysteriously "swallows" any item moved close to its bottom or side by Lara, like the first half of the Triangle).
Many of Lara's action sequence moves will be known and loved by any aficionados of the video game series. Drawing weapons mid-somersault, swallow dives into water, forward rolls to reverse direction - these are signature moves of the experienced player.
The makers at first envisioned the scenes ultimately shot in Cambodia taking place at the Great Wall of China. When schedule didn't allow for this to happen, the alternative was to build the Great Wall in Scotland. Ultimately, they opted for the stone temples of Cambodia instead.
Apart from normal jumping, the only moves Lara Croft (Angelina Jolie) does in the movie which can also be done in the games is the jump over the living statue and rolls in the air. This can be done in the Playstation game by pressing forward and square, then circle while in the air.
The Illuminati is reported to be a real-life secret society with origins dating back to at least the 1700s if not earlier, though it is a matter of debate whether it still exists. Many books - factual and fiction or science fiction novels - have been written about this legendary group, the best known being the "Illuminatus!" trilogy by Robert Shea and Robert Anton Wilson.
Angelina Jolie was extremely hesitant towards wearing Lara's famous short shorts that she wears in the games and the opening fight scene with Simon, however she eventually agreed because she knew it would make the fans of the character happy.
Martin Clunes was originally asked to play Lara's butler, but filming dates clashed with his wedding anniversary (he makes a special point of never working on his anniversary), so he turned it down. The part was eventually taken by Chris Barrie.
Originally, Lara (Angelina Jolie) was going to be naked in the shower scene, similar to the epilogue of the video game sequel, but the idea was dropped in order to avoid an R rating. So the film could secure a PG-13 rating instead, only Lara's sideboobs are seen.