Our friend Troy Gaul has revised his excellent Instagallery iPad app with a host of improvements. For v1.2:
In short: Grid. AirPlay. AirPrint. Liked photos. Twitter. Facebook. Open in Safari. Open in Instagram. Email, save, and copy yours. Video out. Favorite sets. Recent sets. Better comments. Easy tagging. Entire caption. Filter display. Unnamed locations. Tap to advance. TextExpander. Faster. Bugs fixed.
Check out the App Store page for more details.