I tried adding my del.ic.ious bookmarks to my iGoogle page, as per instructions, but found it slowed up the loading of the page to such an extent that I removed it. Just to make sure that this was really the culprit, I put it back and the same thing happened, so it's definitely had its chance and has been removed for good.
I wasn't very impressed with the editor's picks. Perhaps I'm just not "normal" when it comes to what I want!
I searched library-related things. My impression was that we had access to a lot of those already through other routes. I'm sure that e.g. easy access to certain catalogues would be useful to some people.
However, in the course of my searching I found a very useful gadget for birthday reminders! Since I'm the world's worst for not remembering until the day after it definitely got added to my iGoogle. I'll see if it helps!