They were removed on purpose and a note about the reasons why you are better off without them was added to the FAQ recently.
If you really want to use them then you should use a custom config file for fckeditor because I don't want them in the default one.
If you make a change to the config file it requires clearing the browser cache to load the new config js.
I am planning in addition to the ability to edit the content templates, to also have the ability to edit items in the Style dropdown. This way you can predefine some font styles using CSS classes and let the user choose them from the style list so it only assigns css classes that change the font. That way you can give the users what they want but not have hard coded fonts in the content that can't be easily changed by the skin.