What are the features of codeigniter that you admire most?

[eluser]manojchakri[/eluser]
Hi all I just started codeigniting here few weeks back.And I found the following code features and libraries most useful which will reduce the redundant code.

--Table generation from the database query results
--Automatic Form validation
--Division of model view controller
--Easy to use for those who are moving from procedural programming to Object oriented
--URL helper
--Pagination facility

But I think I need to know more features which will reduce my coding time. Can any one please tell me any features other than the above ones which will reduce the redundant code.
Or share any of the techniques you usually use to effectively utilise codeigniter.
Thanks in advance..