This photo I like. You can easily see the Earth's atmosphere against the Moon's surface. It's the lighter grey band running along the terminator.

Conditions: Sky was hazy with frequent cloudy periods, fog, temp steady around +4C, humidity was 100%.
Location: Metchosin BC
Date: December 20 2010
Telescope: B&L Criterion 4000 SCT f/12, B&L drive corrector
Camera: Canon Digital Rebel Xti
Software: ZoomBrowser EX, Canon Utilities, PhotoShop CS3 for slight unsharp masking and levels.