Rock of Ages

In the middle of the film, there's a 1990's generation Lincoln Town Car on the crowded streets that did not exist in 1987.

Drew is seen walking with a foam hard case for his guitar.

However, this type of guitar protection wasn't introduced until the 21st Century.

When Patricia is explaining to her husband about her "roommate" in the car,she is holding papers.

There is a office clip holding the paper together.

The metal flaps on the clip switch between being up and being down.

At the end of the scene where Drew's band opens for Stacee Jaxx, you can clearly see that the microphone Drew is using is designed to be used with a cord, yet it has no cord plugged into it.

At one point outside the Bourbon Club, a 1995 Chrysler LeBaron convertible (the sleeker model without the hidden headlights) is visible.

The story is set in 1987 but many of the songs are notWarrant - 'Heaven' (1988), Extreme - 'More Than Words' (1990), Poison - 'Every Rose Has Its Thorn' (1988), Skid Row - 'I Remember You' (1989).

It should be noted, however, that these songs are meant to be representative of the mid-late 1980s era as a whole, since this film is a musical/fantasy rather than a historically accurate period piece.

Hough's belly button ring hole flips between being hidden with makeup, and completely open.

The fictional Bourbon Club is supposed to be on the Sunset Strip which is located in West Hollywood, California.

Previously an unincorporated county region, West Hollywood was incorporated as an independent city in 1984.

The mayor of the city of Los Angeles would have absolutely no jurisdiction in regards to businesses located there.

During Drew's first performance on stage in front of the crowd, Drew keeps switching the way he is holding the guitar.

This is due to the mirror effect that is shown by the fact that the writing on his shirt also changes.

When Sherrie Christian walks outside after breaking up with Drew Boley, her big hair has already flattened and is wet without having walked into the rain.

When Stacee and Constance are singing "I want to know what love is" and are up against the mirror.

It shows part of Contance's hair in the mirror reflection and you can definitely tell it is not really her in the reflection as the reflection has lots of brownish red streaks in the hair and Constance's hair is blonde with no sign of red.

At the record store, one of the walls has a spread of Iron Maiden's 1986 album "Somewhere in Time" on it.

The artwork featured is the artwork from the 1998 CD remaster; the artwork that the album had until then had the band's name and album title displayed much smaller and to the top left corner.

During the song "More Than Words", sung by Sherrie, there is a scene where Drew is adjusting the microphone and the scarf is already tied to it even before the Lonny even does the "sound check".

Lonny makes a reference to Dirty Dancing, which debuted in August 1987.

However, based on Sherrie's time card, that part of the movie takes place in May.

The angle of Stacee's head changes during his interview by Rolling Stone magazine.

At the beginning of the interview, he sits up and leans forward on the couch, and starts to say, "I think, due to the changing nature of the music industry.

" with his head leaning to his left.

The camera angle changes, and his head is instantly leaning to his right.

There is an Eddie Van Halen "Wolfgang" guitar hanging on the wall in the record store.

The "Wolfgang" wasn't available until the early 1990s.

When Stacee is being interviewed his fingernails are clear.

When he gets up to take a drink he has black nail polish on.

When Lonny is testing the mike for Drew, he puts the scarf on it.

However, when they originally get on stage, the scarf is already on it.

When Sherrie and Drew reunite while the Z Guyeezz are performing at The Bourbon Room, Drew is wearing a red shirt under his jacket.

When Sherrie takes it off, he is only wearing a black tank top underneath.

The red shirt is suddenly gone.