What's almost as amazing as the fact that the crow is one of the world's smartest animals, is that they're so commonplace. But, when you think about it, it follows: Smart animals survive and proliferate.
These intrepid black birds (from their beaks to their feet) are part of the corvid family, which also includes that other close relative of the crow, the raven. Almost all species of corvid have been observed using tools, have well-studied languages, a demonstrable generational memory and frequently vocalize emotions like fear and happiness. Domesticated crows even have "names" for their owners, typified by a vocalization only used in the presence of a particular person. Further, they are able to recognize a number of faces.
Part of the crow's ability to endure is the fact that they eat such a variety of food, over 1,000 different documented items. Dedicated omnivores, they'll eat carrion or carry out. They even recognize logos. Sadly and amazingly, crows will always descend upon a McDonald's bag before they peak into a plain brown sack.
If you need a list of 19 more reasons to love crows and some baby pics that make it impossible not to, check out this Buzzfeed list.
And also consider the great imagery these big black birds provide. They show up time and again in popular media ... take a listen to the Mountain Goats' song "The Crow," my personal favorite song about these special birds.