I cannot seem to get the SharePoint 2010 Filter Web Parts to display. I tried enabling the SharePoint Server Enterprise Web application features at the Site Collection level (Central Admin - Manage Web Applications - Select Web Application - Manage Features - SharePoint Server Enterprise Web application features - Activate) as well as at the Site level (Site Actions - Site Settings - Manage site features - SharePoint Server Enterprise Site features - Activate), but they still don't show up when I browse the list of web parts in the Filter Category.
I think I'm enabling the correct feature sets. Is there another dependency or something else I'm missing?
Additional note: I'm getting around this issue by manually adding the web parts to the Web Part Gallery for my site. It's a bit of a nuisance, but I am moving forward.