I must say i'm not terribly impressed with this DVD.  85% of the presentation is on the position after these moves:

1. e4 e5   2. Nf3 Nc6   3. Bb5 a6   4. Ba4 Nf6   5. O-O b5   6. Bb3 Bc5  7.a4 Rb8.   

This is the move that differentiates what Shirov refers to as the Tkachiev systerm.  This seems odd given he makes many references to this as "my lopez".  Unfortunately, there is very little disussion of black or white deviations.  In a roundabout way, it becomes clear that his intention is rarely to play Bb7.  Presumably if white doesn't play an early a4, he would aim for a quick Bg4, giving him more direct attacking chances against white's center than the solid Bb7 lines.

The video was insightfull at first, as he shared many thoughts about GM prep, especially the impact of modern computers.  However, he rambled a lot and seemingly did little preparation for the lecture.  Frankly, i feel he glossed over black's best moves (although he would vaguely mention them) and spent too much time on the difficult positions black ended up in.  

I don't need an opening video to "sell" me the variation with brilliant wins from the black side, but this video lacked any sort of enthusaism or "hope" from a presenter who has made this his primary defense for over a decade!   I got the impression he was trying to avoid giving away too many secrets.  I often sat twiddling my thumbs while our hero mumbled "uhh",  "ermm", and "i forget" as he tried to solve tactical problems in non-critical positions without the use of a computer.  

This is basically no more than an interesting games collection - too incomplete to form the basis of a repertoire, and too narrow in focus for a state of the art theory survey.  Sadly, none of these games impressed me with black's supposed "counterplay".  There is very little strategical explanation which indicates any logical motivation behind his choice of lines.   Most of the video is spent demonstrating that black can usually draw after dropping his b5 pawn, and that the Nxe5 fork trick doesnt necessarilly win for white.  I'm left wondering why bother playing the Rb8 system at all.  

FYI, the Chesslecture.com 3 part lecture series on this exact same opening is certainly a more suitable introduction for the 1600-2000 crowd.  Humorously, the most usefull thing i gained from Shirov's video was a hint that he could possibly play 7... Bb7 in the futre.

If i remember correctly Svidler used the same line deviating somewhere to beat easily Caruana in the Italian Championship this year. This is a promising road for White as it seems if we believe the engines' evaluations. Definately a more practical way than entering the complicated main lines.

Oh and in the whole Ruy Lopez vs Slow Italian theme, I never understood which color the Black's pawns a6-b5 vs a6-b7 expansion was favouring.

In my Mega2010 there are about 1000 games with 6.c3 and about 840 games with other than 6...c3. and after 6.c3 7.b5 the statistics in Mega shows:

Move      Games   Score       
7.Bb3      399         56.5%
7.Bc2      307         60.1%

Perhaps this figures don’t prove very much but I fail to see them supporting  that  “almost allgames transposes” (only 399 of roughly 1800 games) neither that “7.Bc2 should be inferior to 7.Bc3”.