A cool feature added in recent Zoho Show update is the ability to embed presentations anywhere on the web. This can be powerful and there is nothing like it (based on my limited knowledge) on the web today that makes this functionality possible - unless you create and save your presentation as flash object.

To demonstrate this functionality, I created this sample document in Zoho Writer and inserted a presentation into it here. 

If you want to try this functionality, first make your presentation public (Actions --> Make Public) and then use Embed Slideshow option (Actions --> Embed Slidehow) and copy the code given and paste it anywhere. To set the slide show, use the 'Set Show Timing' option (Action --> Set Show Timing)

More on this later...

Raju