Add an iCal feed to your site for the Events Manager plugin
You can subscribe to an iCalendar or two iCalendars and display them on your page
Display upcoming events from a shared Google, Outlook, iCal or other ICS calendar.
This plugin adds a widget to display your upcoming events (gigs) from Last.FM on your WordPress blog (using the hCal Microformat).
This plugin can receive iCalendar feeds from third party sites and display aggregated upcoming events from multiple feeds in your sidebar.