[raju]

I use the "Apple" key ...

Put this in your .emacs file

  (setq mac-option-modifier 'super )
  (setq mac-command-modifier 'meta )

I also use the System preferences to map the Caps-Lock key to Ctrl - A lot easier especially since a lot of keyboards tend to move the CTRL key around

[adestefan]

The worst are the Thinkpad keyboards that have Fn where the left Ctrl should be. This is the sole reason I started to use Caps Lock for Ctrl and now I'm in love with it.

[gnuvince]

That's my favorite feature of Thinkpads: that means I cannot damage my pinkie any further :)