I wouldn't entirely agree Pratik, there's one hugely important feature that was added with SP2, the pre-upgrade checker/stsadm utility. I'd say thats pretty useful.
It's described in more detail here: http://technet.microsoft.com/en-us/library/cc262231.aspx
Steven Andrews | SharePoint Professional | http://www.twitter.com/backpackerd00d | https://baron72.wordpress.com/