I don't have one. At least I don't have one I could use. My only joystick uses a gameport, and I don't think a motherboard has had support for one of those in 15 years.
If you build, you could still get one. You'll need 3rd-party drivers for Windows 7, though. You'll need extra drivers for a USB MIDI/gameport adapter, as well. And you know, I still can't bring myself to sell, give away, or throw away, my doorstop of a Sidewinder 3D Pro

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I was speaking, of course, of console controllers that can be used with PCs (for that matter, a modern console would not be a bad target, as modding would be the only major downside). While it took a lot of fiddling (Xpadder and AutoHotKey), I found I could play FS2 better on my gamepad than w/ a mouse (I can aim better w/ the mouse, but ease of maneuverability w/ the pad more than makes up for it). Still used the keyboard for all the but the basic targeting functions, of course.