Apps
Quill
A vector art editor for the iPhone/iPod Touch (and now the iPad!) Draw smooth bezier curves, zoom and scale with perfect clarity. Each curve can be selected, moved, rotated, resized, and recolored. Round brush and calligraphy brush included. Save, load, and email your artwork in a variety of formats.
CalcEdit
A simple calculator for the iPad, with a couple special features. Calculations are added to a rolling history, can be edited, and answers can be easily used in new calculations.