Using Excel, Word, or PowerPoint? Have the Formatting toolbar visible? Good, don’t spend another second moving your mouse up to that font selection area. Instead, press Ctrl+Shift+F, and all of a sudden your cursor is in the Font selection button on the Formatting toolbar. From there you can type in the first few letters of a font name (such as ver to get “Verdana”) and press Enter, or you can press the Up Arrow and Down Arrow keys to select the fonts one at a time. Press Alt+Down Arrow to see the pulldown menu.
Does this work with Microsoft Outlook? Alas, no. That would imply a consistency of design that, sadly, does not exist.