The hugs are in fact so paramount to the show that there are fan websites devoted to ranking hugs and counting hugs . There are even innumerable you tube hug montages like the one below, which is missing three seasons worth of hugging.
Another thing about the show is that the peripheral characters always refer to , the brothers Sam and Dean, as "the boys." My husband and I have taking to calling Weasley and Fry "the boys." Due to their closeness and their tendency to hug. A few days ago my husband texted me these picture of the "the boys" hugging and having a Supernatural moment. Im pretty sure its the cutest thing Ive ever seen.