[Andric d'Regor]

would disagree interface/usabilty from games - many or even most game interfaces suck. the collaboration and support stuff also works in games as its a social/relaxation activity and folks will put up with lesser interfaces for their own activities that they will not for work where many struggle to multitask anyways. Games are a single focus activity () while most peoples work days are not and the interfaces need to reflect that.
Basically unless you have a work task as single purpose as a game then a gaming interface would suck, and even then most popular interfaces are not even from the gaming companies but from the community - try getting a community UI from your collegues at work....