I have not been to the ruins of Pompeii or Herculaneum for some years but my husband and I have just been to the British Museum in London to attend a special early morning opening today of the Pompeii and Herculaneum exhibition which was laid on specifically for Friends of the British Museum. I have to say that I think it is brilliant and thoroughly well worth seeing.
As there were no members of the public allowed in whilst we were there, there were only a modest number of other people in the exhibition but it still took us well over 1.5 hours to go around it and I would say that anyone who has been to the sites but not been able to spend a lot of time in Naples museum looking at the artefacts there will find all the items and frescos on display in this exhibition and the "walk through" imagery extremely interesting.
If anyone is planning to visit the sites for the first time this summer and can get up to London to see the exhibition before they go I recommend it to whet the appetite for the real thing. The museum shop http://www.britishmuseumshoponline.org/ currently has a couple of DVDs on sale one of which offers a hour or so of "virtual reality walk through" the streets of both Pompeii and Herculaneum.