Show user group in CP user listing? I want to scan my user list to see if anyone hasn't been assigned to a group. 

Is there a way to show user groups as a column at admin/users?
There isn't a way baked in to Craft - probably something to do with the fact that users can be in multiple groups. Although I totally agree it would be useful, like at least listing the first group they're in, like the Entries view does with Categories.