The SIGCHI Bulletin
has some very good articles in it
but...

...t'is a shame about the online access issues - particularly considering they are an HCI special interest group - pdf's designed for print, some of which are 2MBs - though at least they recently added bookmarks to them ;)

these are in stark contrast to the very nicely formatted versions of William Hudson's articles (in the same) which he posts here: syntagm.co.uk/design/articles.htm