Plug for Australian works:
Dreaming Down Under, ed. Jack Dann & Janeen Webb
Dreaming Again, ed. Jack Dann
Bonescribes: Year's Best Australian Horror, 1995, ed. Robert Hood & Bill Congreve
The Year's Best Australian SF & Fantasy, ed. Jonathan Strahan & Jeremy Byrne
The Year's Best Australian SF & Fantasy, ed. Bill Congreve & Michelle Marquardt
Collections by
Terry Dowling,
Margo Lanagan
All of the above, sadly, are likely only in deadtree versions, and some long out of print -- although if one e-mailed the small press publishers likely they've got them about. Maybe if a bunch of people e-mailed all the Australian SF small press folks they might make ebooks out of the long out of print works? I especially like Terry Dowling, for example, but his stuff's hard to get hold of.
In ebook format the local SF/F magazine
Andromeda Spaceways has ebook versions as well as print, although only in PDF, unfortunately.
Non-Australian works...
The Year's Best Fantasy and Horror, most especially the ones edited by Grant and Link
the "Mammoth" anthologies (Vampires, Fantasy, Horror, 'Dark Fantasy', Ghosts), edited by various people and by different publishers ... Stephen Jones, Martin Greenberg, Mike Ashley
I like my short fiction