With the latest update of Zoho Show that happened a few minutes before, you can now have shapes inserted in your presentation (needs Flash 6+ plugin in your browser).
Other than the above, a couple of other features have been added too. Whenever you make a presentation public, you can now mail your friends directly from inside Zoho Show (informing them that you have a presentation made). Another handy feature is the showing of the first slide as a thumbnail when you click on a presentation under ‘My Presentations’.
Try the latest Zoho Show now.