Mini review: 79004 Barrel Escape
79004 Barrel Escape is what LEGO call a 'market driven' release which I think means that, other than direct from LEGO, it's only available in a given country when a specific retailer wants it as an exclusive. In the UK it's Toys R Us; I'm not sure about the USA.
Not having seen the movie yet, I can only guess that it's some sort of tavern with a prison cell in or next to it, and going only by the action scene on the box (and the name of the set), it appears that Bilbo releases the dwarves, who presumably are being held captive by the elves, from the cell, and they escape in beer barrels.
The main structure, consisting of a barrel ramp, a bar and the cell, is hinged in two places. The set also contains a weapons rack, table and chairs and a free-standing barrel stand. There are three of those nice gold elven-swords that Elrond brandishes in 5000202, and two spare One Rings. If you have all the LotR sets you'll have quite a collection of spares by now!
There isn't a lot of 'action' in the set. The cell doors can be opened and the barrel ramp can be raised so that the barrels, with dwarves inside, roll down thus making their escape. The only other action involves sitting the figs in the bar and drinking which, while fun for many of us, probably isn't too exciting for kids :-)
This is not a terribly exciting set to play with, then, but it's well designed and full of useful pieces. Although I've only built three of the Hobbit sets so far, I suspect this may be the weakest of them. Nevertheless, the Hobbit completest will need to buy it for the 4 unique minifigs.