M51, the Whirlpool galaxy, epitomizes the spiral class galaxies with a twist! Pardon the bad pun, I couldn't help it. The Whirlpool is famed for its detailed structure and apparent connection with a smaller 'companion' galaxy. This smaller galaxy appears to be exerting a gravitational force upon the outer arms of the Whirlpool, distorting its shape.

This photo was taken by Jason Ware, using an LX-200 16" scope with CCD imaging. A link to Mr. Ware's site should follow soon.