A desktop pager is a little program that sits in the corner or the dock, that allows me to switch desktops with a click, and drag windows between desktops.
Something like KDE had with kpager:
Mission control is very nice, but it works better when you use a trackpad and not a mouse, and it can be quite an interruption. To move windows between desktops with key combos you need some acrobatics (click and hold titlebar, then ctrl+⬅). With a pager, you could just fling the icon to a different desktop.
Is there a desktop pager for Mac OS (Lion)?