I have a few comments -- beer-related, of course -- on Jim's great London report:
The White Horse on Parson's Green and its cellarman, Mark Dorber, are sufficiently famous -- at least in beer circles -- that when Bass sacked Dorber (the WH is a Bass pub) a few years ago there was a national outcry in the press and Dorber regained his job, and then some.
Jim mentioned the sad fact that mild isn't so available as it used to be. I expect this is still largely the case, but thanks to CAMRA, I believe it's rebounded a bit.
Old Speckled Hen is sold in the US in a widget can, and also in a conventional bottle. Granted, it's not going to be the same as a pint of it in real ale form. I believe this beer was made by Morland's until that brewery was taken over by Greene King. GK's Abbot Ale is sold in a widget can in the US.
Digressing a bit, the classic from Greene King is Strong Suffolk, a 4-star beer in Michael Jackson's Pocket Guide to Beer (see link in Chowhound books). Should you ever come across any, it'd be worth a try. Digressing yet further, Greene King is owned by the family of Graham Greene.
The Good Beer Guide 2001, like all CAMRA books, should be available in the US through Storey Books (www.storey.com), but a visit to their web site in search of the book led me to a bad link. It is available from www.amazon.co.uk, but I'm guessing Chowhound doesn't pick up a commission for Amazon UK sales!