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<pre style="font-family: 'Monaco', 'Courier New', Courier, monospace; overflow:auto; color: #222; background: #DDD; padding: 0.2em; font-size: 10px; width:400px">tell application "iCal"
repeat with ThisCal in calendars
set EventCount to count of events of ThisCal
set ToDoCount to count of todos of ThisCal
display dialog (name of ThisCal & " - Events: " & EventCount & " ToDos: " & ToDoCount)
end repeat
end tell</pre>