Alf Inge Wang - A small site with quite a few good links to Amiga sites of interest.
Amiga-Classics - Website totally dedicated to the Amiga 500, 500+, 600 and 1200 series.
AmiHaHa - A regularly updated site that contains the latest links.
Donner, Gregory - Home of Workbench Nostalgia, unofficial websites of The Orchestra (TV mini-series with Julian Chagrin), Blue Thunder (the helicopter), AmigaOS 3.5/3.9 FAQs and personal musings.