The film's limited budget is noticeable in the video quality of the transfer.  It is hard to distinguish what is problematic with the transfer and what was part of the original video quality.  The film was originally shot on 16mm stock, so it doesn't translate well in the digital world and on a nine-foot screen.  The film is constantly out of focus, which is true to the original source.  However, it gets quite annoying when watching it on such a big screen.  Details and textures are virtually extinct, not that I was expecting much considering the source.  Edges are noticeably outlined by a halo effect and blooming.  This is especially noticeable when Hubbins wears a white suit.  Film grain is present throughout, but it is very fine instead of the expected coarse grain usually present in 16mm stock.  The contrast and brightness levels appear accurate, as do fleshtones.  Colors suffice but are not quite vibrant.  If watching this film on standard screen sizes, then the quality is much better than the original home video release.  However, I do not advise displaying this film on a large projection screen.

The audio is presented in DTS-HD 5.1, accompanied by the original Dolby Stereo track.  The DTS-HD track is absolutely preferable.  The studio has done a tremendous job remastering the audio.  The dialogue is nice and clean, present in the center channel.  The surround channels do not contain discreet effects, only a smattering of bled music.  The rock sequences have great power.  The music separation is nicely done.  Drums, guitar and vocals stand out separately, but still remain a whole.  The clarity is quite impressive.  The subwoofer is present, but it feels far away at times.  The bass playing by Derek Smalls contains a bit more high-mids than bass frequencies.  There are times in which the audio track sounds claustrophobic.  The precedence effect surely comes into play with this track.  Still, based on the original material, this surround track is a terrific upgrade for fans.

The Blu-ray package of "This is Spinal Tap" comes with two discs.  The first disc is the Blu-ray disc and contains the feature as well as most of the special features.  First there is an audio commentary with most of the cast members.  There is a bunch of laughs in this commentary and is highly recommended for anyone that considers them a fan of the film.  Next on the disc is a plethora of deleted scenes and outtakes.  There is over and hour of footage.  It is quite exhausting when you don't much care for the film to begin with.  "Catching Up With Marty DiBergi" contains footage of Rob Reiner discussing his career.  "Flower People Press Conference" is a bit of fluff.  "Spinal Tap Appearance on 'The Joe Franklin Show'" is a brief performance segment.  "Spinal Tap sells cheese and a variety of other exciting products" is a section of promotional spots.  The last section on the Blu-ray disc contains four music videos: "Big Bottom," "Hell Hole," "(Listen to the) Flower People" and "Gimmie Some Money."

There is a second disc in the collection.  The second disc is a standard DVD.  There are only two short features on this disc.  The first is, "'Stonehenge' Performance at the 2007 Live Earth Concert."  The second feature is the "National Geographic Stonehenge Interview with Nigel Tufnel."

"This is Spinal Tap" is either a love it or hate it movie.  Seemingly most people love it.  So if you have an inkling that you would like this film then give it a shot.  I for one didn't find it terribly interesting.  The video quality is representative of the original source material.  The audio quality is a nice upgrade.