I've written my first plugin - Pages+. It provides a smooth way of viewing, editing and deleting pages quickly. It works in both 1.5 and 2.0.
It can be downloaded here.
It came about when I was asked to speed up the backend of a wordpress site that managed over 2000 pages - the built in wordpress pages were taking >60 seconds to generate because the functionality to fetch a page 'tree' always traverses all the pages (not just children of the current page).
I'd be really interested to hear your comments either here or on my site - as I said, it's my first plugin and i'm looking forward to some creative criticism!