Obviously a lot of series are surreal and obscure and what not, but I have been watching this series called
"Soul Eater", which is obscure, kinda funny and trippy. Are there any other animes that share those characteristics?

xxxHolic is about as surreal as it gets. Actually, I think it meets all of your requirements.

Cat Soup.

Shakugan no Shana, deals with the existence of people being eaten and a flame version of them being put in their place to gradually disappear so their disappearance is not noticed. It's really good.

And Shana is my waifu :3

I want the second season of it.

meh shakugan no shana isnt that... 'surreal' same as bleach i guess...

Flame haze=shinigami
Guze no tomagara= captains maybe?
all of the rins and stuff like that= hollows.
both are on about the balance of the two worlds and stuff.

you get the drift.

Angel's Egg. I presume most people here have heard of Serial Experiments Lain. I havent actually seen Boogiepop Phantom, but I'll let a particular synopsis speak for itself:

Scene 001: Shimishitashika park: Some name you won't remember
Darkness
An aperture of light opens, a drop of water falls.
Japanese Schoolgirl: I hate me, my darkness, What does this mean?
Mysterious figure: I am boogiepop, this was not meant to be.
Insane figure: From the future, I bring the past. giggles
Japanese Schoolgirl: Kill me.
Flashing Lights, Energy Butterflies
Childhoood version of self: Can you remember, the light? Lets be friends
Scene 002: Someones house: Another name you won't remember
Young version of schoolgirl plays happily
Detective: You lose yourself in the holographic memories of the event
A flash of light tunneling to the heavens
Priss: I, as strength, will kill your weakness.
Distorted sequence, darkness
Scene 003: Now, more names you won't remember... possibly the ones from earlier
Boogiepop: Her time is not yet, She has not evolved.
Doctor: It is her weakness, and the cruelty of growth.
Injects Mysterious medicine
Japanese Schoolgirl: I will live in the space of the past
Blood splurts, a voice screams
Insane monstrous cop: I kill because I must, the secret... it is too great, but boring.
Childish laughter turning to sobs, a red balloon floats up
Priss: Damn.

I expect browsing the "weird" category at the anime meta review (http://amr.nextstudio.net/) could turn up some interesting stuff.