ShowPadView is the free Viewer for ShowPad, the famous presentation app.
ShowPad is the perfect tool to present photos on the go, avoiding head bumps.
One display for showing photos on the iPhone is usually not enough because everybody wants to see them first.
So just have your photos shown on many screens. Then everyone can see exactly what you see on his own iPhone at the same time.
You can also give presentations and slide shows without a beamer or overhead projector wirelessly via Bluetooth and Wi-Fi.
Your iPhone is your presentation platform.