ALEX ANGAS  I've been using KeyCue ever since buying a Mac to help me transition from Windows. It's been really helpful for learning keyboard shortcuts, something that Mac OS X keeps hidden too much (IMHO).

It's a great app in that it simply does what it says on the tin. The interface is clear and well organised. A possible option might be to not display certain shortcut categories so the KeyCue screen isn't so big (perhaps that's there I haven't looked).

I also contacted support recently about the Firefox crash bug that others have reported on this thread. They wrote back to me straight away with a very clear e-mail (I'm sure they're sick of hearing about it). It's a bug in Firefox that is fixed in 3.5.3, see https://bugzilla.mozilla.org/show_bug.cgi?id=499600 for more details.

Strongly recommended.  
(Version 4.5)