It's almost kinda' creepy. I'm running Chrome dev. channel. The updates are so silent, the only way I can tell what version I have is to look in the about box. Although now and then an extension stops working. Still, it's way less intrusive than FF updates.
it does sound creepy since you put it that way. maybe an optional tray tip wouldn't hurt, i guess..
I think I found a happy medium:
http://build.chromium.org/buildbot/snapshots/chromium-rel-xp/62116/
There are newer nightly builds but this one is working nicely. I got the zip not the installer.
I removed Chrome 7.x dev I was using and got rid of google updater. I also looked in the
registry for the supposed hidden unique ID. I couldn't find it under the reputed keys. I'm
hoping this means they really got rid of it in Chromium.
I just logging into my sync. The only thing that didn't work off the bat was Speed Dial.
But I copied the Local Storage folder from Chrome 7 and that got me going without redoing
the dials.
Supposedly this has hardware acceleration on by default. I don't notice any difference.
Either it's off or I have a crappy video card or both.

Other than that, everything seems to work great. Now I don't have to worry that
silent update will hose stuff that works just for the thrill of updating.
All I did to "install" wan unzip the file to its own folder and make a shortcut.
Some settings I got from chrome 7.x. About the only thing I had to update
manually was the search engine settings.
You may want to get all your extensions running and leave the old chrome on for a few days
until you see how stable 8 is for you. In 2 days I haven't gotten a crash dialog though. Seems
smooth.