Goofs

In the last fight scene between Kell and Duncan, the location of their fight jumps from the 1st floor of the factory to on top of a catwalk. After they jump off the catwalk, the same "1st floor fight scene" is used again.

The lack of dust in Connor's war room after ten years of disuse.

Duncan's shirt suddenly changes when he sees the remains of Connor's store for the first time.

In the rooftop battle, the "B" in the sign appears reversed in one shot.

After the scene with the stagecoach, you see Duncan McLeod in a NY Taxi with yellow bumpers and the number 13A on the door. When he arrives at his destination (the building that was blown up in an earlier scene) the bumpers have changed to black and the number on the door is now 45G.

In the flashback that begins "Kildare, Ireland 1712" a fuss is made over the rogues exacting a toll on Kate's carriage "by order of the King". While Connor, Duncan and even Kate's party are aware that the "King's decree" is a fake, it seems strange that no one mentions the most obvious proof of this: the reigning monarch in 1712 was Queen Anne.

When Connor discovers Duncan after the Battle of Glen Fruin, the caption says that it is the year 1625. The Battle of Glen Fruin took place in 1602, 23 years earlier.

Ignores several earlier movies and TV shows in the Highlander series, but they were never in strict continuity (like the various movies in the James Bond series).

Obvious stunt double for Connor during his final fight with Duncan.

Just after Carlos shoots Duncan he unloads his pistol and the spent cartridges drop on the floor, at which time you can easily see that the cartridges contain no primers.

Duncan has to stop in order to avoid walking into the obvious blue screen during the final scene. (Corrected in the Director's cut DVD.)

One of the gravestones in the cemetery can be seen moving in the wind.

The Volkswagen's windows blow out in all directions despite being caused by an exploding building on one side of it.

When Kell enters the Sanctuary he is heard speaking, but for a brief moment his lips are not moving.

Kate/Faiths apartment is in the National History Museum in London. This is where Duncan and Jacob start their final battle, which ends up in a factory and then to the USA - there is an obvious US Skyline in the final moments of the battle.

The scene with the changing cab is supposedly taking place in New York, but in one shot you can clearly see several cars that were never sold in the USA: a Mercedes Benz 208 van, some Dacias and a Fiat Tipo.

Kate/Faiths apartment is in the National History Museum in London. This is where Duncan and Jacob start their final battle. There is an obvious US Skyline in the final moments of the battle.

Duncan goes to Connor's old shop/apartment and has a flashback of the explosion, even though he wasn't present when it happened.