Taking a screenshot in ICS without rooting Is it possible to take a screenshot in ICS (Galaxy Nexus) without external apps and without rooting? Most apps on the market seem to require rooted phones.

I did find this app which claims to not require the phone to be rooted but it costs $4.99 which is a bit steep for an app that only takes screenshots.
Press the Volume Down and Power buttons at the same time and hold them for a second or so (this is the vanilla behavior, at least; source).

By default on my device it will save to /sdcard/Pictures/Screenshots (or whatever your equivalent "external storage" path is, I assume).