A nice simple WordPress Admin style sheet (in the form of a plug-in). Also a good jumping off point for modifying your own style if you want — which i’m slowly doing (and will release at some point).
“WordPress has been a helpful tool. Love it, hate it – it’s free, flexible and approachable by average joe web developers who don’t really write programs (me). There’s much about it I don’t love, but I use it often. One thing that bothers me each time I install it: the default admin theme. I like the look of the WP-Tiger theme better, but it feels less responsive to me (probably because of client-side layout redrawing?). What I’ve really wanted is something super quick to install (a plugin-based theme), something responsive and based on the initial layout, but much cleaner/simpler.”