http://wordpress.org/plugins/events-manager/

coupled with the jquery ui fullcalendar plugin: https://wordpress.org/plugins/wp-fullcalendar/

we have a potentially vastly improved calendaring system.

You can see it here:

http://dev.sudoroom.org/calendar

create your own account on the dev.sudoroom.org site using:

user: sudoer
pass: superuserdoroom

// Matt