Please learn how to use the forum.Oh yeah...Flip4Mac is definitely essential. Pretty much one of the first things I download when setting up a new system. And, if you want any other capabilities for dealing with video, then the upgrade is worth the few $$. I can import and export stuff for iPod use and other things.
There are several more essentials, like Cleardock of the Unsanity haxies HERE. I also use Fruit Menu and Window Shade X from them.
A good site to check out is iusethis.com. That's actually a link to my personal profile, but you can get to their home page from there and see all the other apps with people use.
One more thing that I find handy is iBackup.