I switched to Fedora 7 a while back and as a Beryl user, I was glad to find that Compiz Fusion was included by default.
After making sure I was using the latest nVidia graphics drivers, everything worked fine. But a lot of the plugins didn't seem to be installed - particularly Expo, a plugin that zooms out to shows you all your desktops at once and even allows you to move windows between them while zoomed out.
I worked out today that all the Beryl plugins are installed, but the control panel no longer gives to access to them.
All the options are available in gconf-editor, under /apps/compiz. To enable a plugin, add its name to /apps/compiz/general/allscreens/options/active_plugins.
I really don't know why the Fedora chaps haven't put in a friendly interface for this stuff, at least there doesn't seem to be one in the repos.
I think this sort of eye candy is one of the things that could draw people from Windows to Linux, so let's not hide it!
Note: I've since found the package that installs the GUI compiz setup tool. It's called ccsm, and can be installed from Add/Remove Software.