Yes! Especially "Hurdy Gurdy Man". I've also always thought the song was incredibly effectively used in this preview, which forever made me perceive the song as sort of disturbing:

^
Wow, that works great. Yeah, the song has a dark edge to it, but I never thought of it as that dark. ;)

On a much lighter side, Jefferson Airplane has a load of hippie/psychedelic stuff, but here is one of my favorites (and one of the few songs they did not composed by themselves). It's not psychedelic but has a great feel-good hippie vibe.

Might as well throw in the latest and greatest psychedelic band.





EDIT: Both videos are best appreciated in full-screen mode. ;)

i'm not really into the ''hippie'' thing, but this song is really cool

Country Joe and the fish - I feel like i'm fixin' to die

i'll just give the youtube url for the live version since i prefer it to the studio version(I can't give the full link because i didn't post enough stuff apparently)

My top ten songs from the summer of love (I was alive and kicking then, although I was not a hippy).

1) California Dreaming
2) White Rabbit
3) White Room
4) Tales of Brave Ulysses
5) Lucy in the Sky With Diamonds
6) Remember a Day
7) Strawberry Fields
8) Only a Northern Song
9) Here Comes the Sun
10) Sgt. Pepper´s Lonely Hearts Club Band (reprise)

here kids smoke these

Remember a Day (by Pink Floyd, of course) is probably an underappreciated psychedelic song. It is also my favorite Pink Floyd song.

Hey Bulldog is pretty cool too.

Maggot Brain - Funkadelic. Psychedelic enough for me. :)

In the Eighties I did a psychedelic rock show on WMBR (M.I.T. college station) in Boston MA. This is a list of some of my favorites from that show. I only allowed one song per artist or the list would have gone on forever.

Lather- Jefferson Airplane
You Can't Ever Come Down- Joe Byrd & the Field Hippies
Happenings Ten Years Time Ago- Yardbirds
You Set the Scene- Love
Strawberry Fields Forever- The Beatles
Eight Miles High- The Byrds
Saint Stephen- The Grateful Dead
East-West- The Paul Butterfield Blues Band
Mr. Farmer- The Seeds
The End- The Doors
Tales of Brave Ulysses- Cream
Up From the Skies- Jimi Hendrix Experience
Paint It Black- The Rolling Stones
Get Me To the World on Time- The Electric Prunes
Time Has Come Today- The Chambers Brothers
To Cry You A Song- Jethro Tull
Who Are the Brain Police?- Frank Zappa/The Mothers of Invention
Sky Pilot- Eric Burdon & the Animals
Main Vein- Aorta
Bluebird- Buffalo Springfield
Suzy Q. - Creedence Clearwater Revival
Autumn's Child- Captain Beefheart
Buddha- The West Coast Pop Art Experimental Band
Not So Sweet Martha Lorraine- Country Joe & the Fish
Season of the Witch- Donovan
Maya- The Incredible String Band
In A Gadda Da Vida- Iron Butterfly
Shapes of Things- The Jeff Beck Group
The Wheel- Jerry Garcia
Lemon Princess- The Leaves
Ramble On- Led Zeppelin
I Unseen- The Misunderstood
The Best Way To Travel- The Moody Blues
Theme From an Imaginary Western- Mountain
Open My Eyes- The Nazz
Cinnamon Girl- Neil Young
Ballad To An Amber Lady- Pearls Before Swine
See Emily Play- Pink Floyd
Whiter Shade of Pale- Procol Harum
Who Do You Love (long version)- Quicksilver Messenger Service
Omaha- Moby Grape
Don't Look Back- The Remains
My World Fell Down- Sagittarius
My White Bicycle- Tomorrow
Paper Sun- Traffic
I Can See For Miles- The Who
Who Loves the Sun- The Velvet Underground
Time of the Season- The Zombies

If you own all the above songs, you'll have a pretty good start on a decent collection of psychedelic music.