The Brian Jonestown Massacre always fits the mood when you have a great buzz going on but if I am in more of an up and going mood then I will put on an LP I have of The Holy Modal Rounders, they were a great folk band from the 60s.
ANY Death Cab for Cutie song. Definitely the best Opie Nod Enhancer in the world. Here's an example of one- https://www.youtube.com/watch?v=hy8m90clHgw&feature=related Takes a second to get started, but totally worth it. I'm serious, you should ALL listen to them on your next Nod. Also, any Armin Van Buuren Trance music is good for Nods where you actually have to be semi productive. https://www.youtube.com/watch?v=G7qEivYkgZM Fucking amazing if you guys like Techno. All of his work is.
I like the intro song to boondocks. Then i just end up watching the episode because well that show is BOMB
fuck yeah, OXYGOD!! death cab for cutie is one of my favorite bands to listen to while i'm nodding, especially PLANS or TRANSATLANTICISM. NARROW STAIRS is pretty good as well. also, i can't believe that nobody has mentioned TOOL yet. god, TOOL is fucking amazing in general, even so much more when you are in opiate bliss but yeah. good call on the death cab, for real.
Pakalolo Sweet- Humble Soul Probably sounds like more of a stoner song, but it's beat is just fucking perfect for those tasty opies... The Mushroom Man
https://www.youtube.com/watch?v=qsnUu71Viyo Arlo Guthrie - Coming to Los Angeles. Probably more for potheads, but listening to the song while watching the Woodstock footage is pretty entertaining.