I just learned today that my favorite FTP client in Windows is now available for Linux in the form of their upcoming release. I was pretty stoked when I learned of this, because gftp is alright, but it ain’t great. Since I run Debian, I did a simple apt-get install filezilla and wham-o, there it was. The downside of this install is it is beta 2 and Filezilla 3 is currently at beta 5. I may try to compile it myself if the beta 2 gives me any problems.
Update: If you want to install Filezilla from the Deian respositories, you will need to be running Testing(Etch) or Unstable. It is not in the current stable repos.