Here's one you don't see often: - Arp297 which consists of four galaxies NGC5752, NGC5753, NGC5754 and NGC5755 all of which are located in Bootes.
NGC5754 and NGC5752 are approx 200 million light years distance whilst NGC5753 and NGC5755 are much further away, at approx 450million light years. The more distant galaxies don't appear to be interacting now, although the extended arms of NGC5755 indicate that an interaction may of occurred in the distant past.
By contrast, a gravitational interaction of the closer two galaxies has produced an extremely long (275,000 light years) tidal tale which extends from the starburst galaxy NGC5752, which you can just about see this on the image below. NGC5754 appears relatively unaffected by the collision.
This LRGB image represents just over 11 hours integration and was taken with my Esprit 150.