I know that you can add a recent applications stack to the Dock, which is fine but very limited. I would like the last 50 or perhaps even 100 apps, sorted by last launch. I do not want to use the keyboard for this (sometimes I don't have one around), so my whole point here is to have it work with just the mouse.
A couple ways. In System Preferences -> Appearance, you can set number of recent items. I'm not sure if that affects the stack or just the list under the Apple menu. You can set max 50 for that.
Another way, that I haven't tried, is in another Mac OS X Hints article, which says: