It's not just curiosity - I've found out about a lot of cool widgets simply by looking at other people's phones. So, without further ado - My white (international) Galaxy SII, running the latest CyanogenMod 9 nightly, meaning Android 4.0.4. I'm using CM9's own Trebuchet launcher.
From left to right, the first three home screens run full-sized widgets. There's Minimal Reader Pro, Android Pro Widgets' bookmark widget, and Android Pro Widgets' calendar widget. The fourth screen is my default home screen, running two instances of Minimalistic Text (the phone's name and a bettery widget), and the default Ice Cream Sandwich clock widget. The fifth and final home screen contains my most-used applications, and a weather widget from Beautiful Widgets (I'm still looking for a nice, ICS/Holo-themed 4x1 weather widget).
No modding when it comes to my lock screen, other than displaying the phone's name again. The About phone panel shows the version I'm running.
As you can see, I'm not using anything particularly exotic - I like my experience rather stock (CM9-stock, that is), partly because Ice Cream Sandwich is quite pretty as it is, but also because the more you hack the CM9 nightlies, the more likely it becomes you'll run into problems upgrading to newer nightlies.
Now, while there's a definite focus on Android in this thread, you're of course free to show off your other devices.