Annoyingly it is not possible to insert pictures into any Office Documents except OneNote, and neither is it possible to start a PowerPoint Slide Deck on Windows Phone 8, despite some limited editing capabilities.
Step forward PIX2PPT, a small app which allows one to select pictures from your Picture Hub and turns it into a PowerPoint slide deck, which can be saved to the Office Hub and also uploaded to SkyDrive, from were it can be shared further.
The app allows one to resize pictures so as to produce a reasonably file size in the end, add captions and annotations, which can be further edited in the PowerPoint app, and to set the Slide deck to automatically advance.
While the app is primarily designed for sharing albums I can also see it being used to create a quick and dirty side show in an emergency.
The app has a free trial which limits the slide deck to only 5 pictures, costs Â£1.49 and can be found in the Windows Phone Store here.