There are a number of tasks that a little EFI trickery might require.  If you need to edit EFI, check out rEFIt on SourceForge. rEFIt will allow you to edit your boot environment to show a selection menu for operating systems and provide custom icons for loading operating systems. If you just need to select operating systems, BootPicker will be a more easily support tool now that Apple has taken over the project. OK, so this one is short – but what do you expect, it’s a holiday weekend…