I respect Mark Shuttleworth for putting his money where his mouth is; desktop Linux has come on leaps and bounds in the past few years and it's thanks in no small part to Canonical.
But you can't compare yourself to MS and Apple and, in the same breath, name your new OS "Jaunty Jackalope". What is this, one of those Words and Pictures videos they show to primary school children?! If it was an actual release codename, fair enough, but unlike other software these names seem to stick. What's wrong with "Ubuntu 9.04" or even "Ubuntu, Spring 2009"?
(I'm using, erm, Hardy.)