Dumb #vim trick:

Have a bunch of files open in multiple windows and want to jump to the first (or last) line in all of them?

:windo 1

or

:windo $

and done.

If you use tabs instead of windows, you could use :tabdo instead.

or you can jump to the next instance of /pattern/ in all open windows/tabs with

:windo /pattern
:tabdo /pattern

or the first/last (assuming you have 'wrapscan' set) with

:windo $/firstpattern
:windo 1?lastpattern