Some people want to get rid of the tool bar at the top of admin screens in WordPress 3.3.

There is no built-in way to remove the tool bar (you can choose not to display it while viewing the live site), but you can with at least one plugin, and I’m sure more options will emerge [...]

WordPress offers a couple of ways to control the appearance of the Admin Bar at the top of the screen. Here’s a plugin that allows you to control that visibility for all users at once.
 

While this isn’t a plugin, the Yahoo Web Player is an easy to use media player you can use with WordPress in place of a plugin. It automatically detects links to media files, such as MP3 or YouTube files, and inserts a play button next to the link and a slide-out player at the bottom [...]

Installing plug-ins, which give WordPress added features, was always fairly straightforward, but with WordPress 2.7, it’s very easy.  Everything is done for you automatically through the admin panel.

The default method for changing the order of pages in WordPress is not very user-friendly, but there’s a great plug-in called My Page Order which works very well.  Here’s how to use it (assuming you’ve got it installed – check out our videos on installing plug-ins – click here for automatic installation in WP 2.7 [...]

My preferred plugin for working with Custom Post Types and Custom Taxonomies in WordPress is Custom Post Types UI from WebDevStudios. If you use it and have upgraded WordPress 3.3, you may notice some odd behaviour on the admin menus.
I’m using version 0.7.1 of Custom Post Types UI and when I’m on any of the [...]

Normally an administrator can add plugins, but if you find that’s been disabled, it’s because you’re administering a site that’s part of a WordPress multisite installation – in other words, there’s more than one site running off a single installation.  In that case, only Network Admins can actually install plugins.
 

Yahoo has had a free media player for quite some time, but back in August of this year they updated it and renamed it Yahoo Web Player – and they’ve made it dead simple to use.
By inserting a single line of javascript into your page, it will detect links to MP3s and videos, then automatically [...]

WordPress is run through a database and that’s also where all your posts, pages, categories etc. are stored.  Backing up that database is made easier with a plugin, and WP-DBManager is a good one for that purpose (it also performs many other functions involving your database).  You can download the plug-in here.