Yeah, this would be doable. I could implement it pretty quick as a tooltip which you would get whenever you hover over an user's icon. Although we have that problem with timezones, for some reason drupal's core is pretty messed up regarding this issue. At least the Version 5 we are running on this site. Is it really that important? If it is, I would hack some timezone offset functions into the site template and add that hover thingy.

Cheers!
Paul.

hell if it taste like chicken,bring me chicken!

                                                    rodney carigton

- "I don't have time for a grudge match with every poser in a parka." -Dr. Horrible

 Dilly thingys and hover thingys...stop it my sides hurt (from the laughter) ;P

Assassins do it from behind

call me on my mobile if you are around. I think I've passed you my number, if not, PM me.

Cheers!
Paul.