hotkeys and shortcuts?

When searching for "shortcuts" and "hotkeys" in the forum, i came up with the standard "how to apply numlock" to your phone stuff.

I was wondering if anyone had some more, shall we say, "lesser known" shortcuts?

For instance, dialing ##000000 send on the VZW 8830 WE brings up the CDMA service screen, and dialing Alt + nmll switches from signal bars to the signal strength in dBM; also dialing MEPD brings up SIM card information, etc, etc.

So if you know any I haven't listed, post them, and don't forget an explanation.

P.S. It would be nice if someone told me what the "CDMA edit service" screen did/is.