I like the APOD today. It show Comet Hartley with the OCs M46 and M47.
It also shows the PN NGC 2438 in M46, the faint OC NGC 2425 between M46 and M47 and Hartley's small tail points to the large OC NGC 2423.
http://antwrp.gsfc.nasa.gov/apod/ap101202.html