Can anybody recommend good software for organising and viewing photos? I am currently using Picasa which I'm not very happy with.

Any suggestions would be appreciated - thanks.

I use Microsoft Digital Image suite. It's not bad. I don't like Picassa much either.

I have installed ACDsee7 and Picasa2 but i don't use them frequenlly,actually i don't organise my photos for viewing on pc,but mostly on online galleries.
ACDsee considered as a good viewer.

I am mostly using ThumbsPlus. It is a good viewer and organiser.
You can download a demo to find out :)
http://www.cerious.com/thumbnails.shtml

I have Picasa but use zoombrower that comes with my canon.