To be honest, and though this boxset contains some of the best episodes of the New Series thus far, like many of the boxsets released for the Classic Series it seems pointless if you own any of those episodes - and in this case, all four episodes may be purchased upon the Doctor Who Series 2 Boxset, which is now only a few pounds extra if you don't already own it, contains ten other episodes and a lot more extras.
In any case, if you want the lowdown as to what this boxset contains, here we go. The set has as previously mentioned four episodes, which are the two part stories of 'Rise of the Cybermen/Age of Steel' and 'Army of Ghosts/Doomsday', the latter of which also features the dreaded Daleks. Both stories were some of the best featured during the 2006 Season, but as stated both can be found for much better value in that season's boxset. The lack of the Cybermen's most recent appearance in 'The Last Doctor' is also glaring, and there doesn't seem to have been any kind of audio commentary either, which of course they had when released in the Series 2 Boxset.
The extras are also hugely disappointing - there's an introduction by David Tennant, who of course is brilliant but its a bit of a weedy extra. The only other addition is a documentary which details the best Cybermen moments across both the Classic and New Series, but again theres little you could see anywhere else.
To conclude, this was something of a pointless exercise and the Boxset is a bit of a waste of money considering the lack of the Cybermen's most recent appearance and the fact that all these stories can be found elsewhere for much more value. If the only thing you like in Doctor Who is the Cybermen, then you might like this - otherwise you won't find much in here that you haven't seen already.