TinyPixels: Pixel art creator. Iffy pan/zoom, but otherwise good toolset, incl. copy, grid, art import/export. 4/5 $1.99 http://is.gd/blRvv
Reeder: Superb Google Reader client. Elegant, usable UI + image caching, state saving & services integration. 5/5 $2.99 http://is.gd/blPVj
Photogene: Intuitive, usable app for basic image edits (crops, levels, etc). Naff filters, but otherwise great. 4/5 $1.99 http://is.gd/blQI3
National Trust: Handbook for Eng/Wales/NI NT sites of interest. Sleek & efficient, but content sometimes lacking 3/5 Free http://is.gd/blQvO
Fox Vs Duck: Beautifully designed tilt-based ‘avoid’ minigame. Simple, but fun & great attention to detail. 4/5 $0.99 http://is.gd/bblZg
Polyhedra: Best press-to-fill physics game for Apple handhelds. Nice visuals/audio. Sandbox is a nice touch. 3/5 $0.99 http://is.gd/bblke
On Battleship, links vary by country. Previous tweet had link to UK store. Link to game on US store: http://is.gd/bloKy
Battleship: Board-game conversion. A little buggy/battery-hungry, but entertaining & has several modes. 3/5 $1.99 http://is.gd/bjVvO
Action Hero: Simplified Run! crossed with Express Raider. Entertaining but fleeting. 3/5 Free http://is.gd/bbmFn
Dropbox: Well-judged client for popular sync service. Good preview capabilities & optional offline save per file 4/5 Free http://is.gd/bbm9K