sam and dean fight a giant squid

So, all seasons considered, what are your favorite SPN monster of the week eps? I do like their monsters and standalone eps, but I get tired and fall asleep when we're talking about Dean in hell or Sam doing whatever it is he was doing with his demon powers or anything with that little girl and the angels (and I like Castiel! Just not enough to watch him have plot. Or with Dean.).

Favorite MOTW? Ep titles or numbers are good so I can find them from the place. If there's a little bit of mytharc I need to know to understand the ep, tell it to me in 15 words or less?

I like this show. I do. But when I sat down to try and watch a season in a row I got so painfully bored with all the mytharc, and thus I turn to you, my tech supporters, for help. Help?