alt-tab enhancement

[Brad Landis <Bradlis7 classicnet net>]

I hope this is a gnome thing and not a metacity thing...

My girlfriend has MacOSX, and there's something I like about the alt-tab
interface.  It's actually command-tab, and if you push it a few times,
keep holding it, and push q, it quits the program currently selected. 
This would be a good thing (you could do f4 instead of q or something),
and I would also like to see an enhancement in the look of the alt-tab
interface.  Maybe you could show a screenshot of the program.  This
wouldn't work on slow systems too well probably, but it look better.