Is there an GUI for Mercurial that makes my life really easy?

Question

Can you recommend one over another?

Answer 1

For Windows and Linux (It also partially work on Mac, look at the comment of Nicholas Riley to this answer) there is TortoiseHG clone of the excelent TortoiseSVN

The great thing about theses two is that they are integrated in the shell (Windows Explorer or Nautilus). You see small icons over your files and folder that inform you about the status of your file in regards to the repository and you have a collection of commands/tools accessible from the context menu on theses files.