As part of Bitcoin Watch, a new feature provides a developer-friendly dump of a bitcoin block at the specified height.
"h" - height of block to download
"json" - set to non-zero value, to enable application/json output rather than HTML output
Dump block 72000: http://blk.bitcoinwatch.com/b?h=72000
Dump block 72000, with JSON: http://blk.bitcoinwatch.com/b?h=72000&json=1
This sub-page of Bitcoin Watch shows the last 7 days worth of blocks, each block linking to expanded data:
Superb! Thanks a lot.