Free image tools I like

Imageviewer

Irfanview

= acdsee + snagit for making exe bundle slides show and capture window

Almost every image format supported by plugin(for free download) like swf...

Preclick

to view and organize picture contains information by its flimstrip mode.
HR department guys said this tool very intersting for his personel database.

Office2003 has a default to manager pic but is not supporting to display different folder pictures in slides. (And MS default pic viewer)