UPDATE (Jan/13): See PoC - Selenium - Gui with 3 Hijacked Browser Windows.h2 post for a much better and powerful way to consume Chrome (and IE and Firefox) in another process
Here is something that I have been wanting to do for quite a while.
Using the compiled dlls from https://github.com/chillitom/CefSharp/ (which is a wrapper on top of http://code.google.com/p/chromiumembedded/), here is Chrome running inside O2
And here is the code that made this happen: