[Yontsey]

WeatherDock - A great weather forecast program that has a current temp and whatnot in the top menu bar and can do up to a 5 day forecast.

iSquint - Great program for converting video files into iPod/iTunes ready use.

Handbreak - Great for ripping dvds onto your computer.

SuperDuper! - Creates bootable backups as well as general backups. When I switched hard drives forever ago, I used this to create a copy and then just transfered it to my other hard drive and was good to go.

Mojo - I do have an older version of this, but it allows you to connect with other peoples iTunes library that you give access to and get songs from their library.

I also agree with VLC and Adium. I don't really use Adium much either as I went back to iChat and same for VLC as more or less just use iTunes or something like Netflix, but both are great programs.

I really need to try Click2Flash so I can get better battery life out of my Macbook.