I can hear Luke saying, "Five stars?!?!" (sorry Luke :), but I'm rating this one high because even though it's heartbreaking, it tells its story so well. Dog and Robot are best friends, but when Robot rusts on the beach and Dog leaves him, Dog finds that nothing else can really fill that space. This book is sure to resonate with anyone who's ever lost a friend. I couldn't imagine how it would end, but the last picture gave me a lump in my throat. Not to mention p. 90, when Robot (in his dreams) goes to see Dog, only to find that he's got a new robot best friend, and so Robot returns to the winter beach and buries himself back in the snow. Someone get me a hankie!! 
 I admire Sara Varon's simple, childlike cartoon style, color palette, talent with expressions, and use of arrows to make her wordless story come across crystal-clear. Another great book from First Second.