Maybe 40 images? This takes a while... A lot of these images are popular, so you might already have them, but hey, maybe you don't have some.
Edit: A lot of images, so have some spoilers. xD
Railgun:
(http://i.imgur.com/I9eTwl.jpg) (http://i.imgur.com/I9eTw.jpg)(http://i.imgur.com/RMMefl.jpg) (http://i.imgur.com/RMMef.jpg)
(http://i.imgur.com/1tDtIl.jpg) (http://i.imgur.com/1tDtI.jpg)(http://i.imgur.com/Oxpyul.jpg) (http://i.imgur.com/Oxpyu.jpg)
(http://i.imgur.com/EizRzl.jpg) (http://i.imgur.com/EizRz.jpg)(http://i.imgur.com/G3Jvil.jpg) (http://i.imgur.com/G3Jvi.jpg)
Amagami: (Full Set)
(http://i.imgur.com/mnCswl.jpg) (http://i.imgur.com/mnCsw.jpg)(http://i.imgur.com/ue6Xyl.jpg) (http://i.imgur.com/ue6Xy.jpg)
(http://i.imgur.com/oDiEkl.jpg) (http://i.imgur.com/oDiEk.jpg)(http://i.imgur.com/QOAqLl.jpg) (http://i.imgur.com/QOAqL.jpg)
(http://i.imgur.com/p2eg5l.jpg) (http://i.imgur.com/p2eg5.jpg)(http://i.imgur.com/o4KL1l.jpg) (http://i.imgur.com/o4KL1.jpg)
Saki: (Season 2 FFF Yeah!)
(http://i.imgur.com/PlURGl.jpg) (http://i.imgur.com/PlURG.jpg)(http://i.imgur.com/HoBbml.jpg) (http://i.imgur.com/HoBbm.jpg)
(http://i.imgur.com/Ubhall.jpg) (http://i.imgur.com/Ubhal.jpg)(http://i.imgur.com/zbSUrl.jpg) (http://i.imgur.com/zbSUr.jpg)
(http://i.imgur.com/iMpZcl.jpg) (http://i.imgur.com/iMpZc.jpg)
Oreimo:
(http://i.imgur.com/w8sdDl.jpg) (http://i.imgur.com/w8sdD.jpg)(http://i.imgur.com/JuB1il.jpg) (http://i.imgur.com/JuB1i.jpg)
(http://i.imgur.com/IsrIrl.jpg) (http://i.imgur.com/IsrIr.jpg)
I'll post the rest after a break lol.
Here's some more goodness:
Madoka: (Warning, one picture in this set is NSFW.)
(http://i.imgur.com/qe6Z1l.jpg) (http://i.imgur.com/qe6Z1.jpg)(http://i.imgur.com/vIiwRl.jpg) (http://i.imgur.com/vIiwR.jpg)
(http://i.imgur.com/WzDzql.jpg) (http://i.imgur.com/WzDzq.jpg)(http://i.imgur.com/HCo8Hl.jpg) (http://i.imgur.com/HCo8H.jpg)
(http://i.imgur.com/yn8cKl.jpg) (http://i.imgur.com/yn8cK.jpg)(http://i.imgur.com/HgpRzl.jpg) (http://i.imgur.com/HgpRz.jpg)
(http://i.imgur.com/F4NGZl.jpg) (http://i.imgur.com/F4NGZ.jpg)
Hatsune Miku~ (With a guest appearance from Nagato Yuki)
(http://i.imgur.com/LHj7Cl.jpg) (http://i.imgur.com/LHj7C.jpg)(http://i.imgur.com/rPmy7l.jpg) (http://i.imgur.com/rPmy7.jpg)
(http://i.imgur.com/L9UF5l.jpg) (http://i.imgur.com/L9UF5.jpg)(http://i.imgur.com/2rQWCl.jpg) (http://i.imgur.com/2rQWC.jpg)
(http://i.imgur.com/7KxfIl.jpg) (http://i.imgur.com/7KxfI.jpg)(http://i.imgur.com/C3faRl.jpg) (http://i.imgur.com/C3faR.jpg)
(http://i.imgur.com/eHrWXl.jpg) (http://i.imgur.com/eHrWX.jpg)(http://i.imgur.com/j7w1ml.jpg) (http://i.imgur.com/j7w1m.jpg)
Higurashi
(http://i.imgur.com/kpAgbl.jpg) (http://i.imgur.com/kpAgb.jpg)(http://i.imgur.com/UrHAGl.jpg) (http://i.imgur.com/UrHAG.jpg)
(http://i.imgur.com/CvhWhl.jpg) (http://i.imgur.com/CvhWh.jpg)(http://i.imgur.com/E8wIKl.jpg) (http://i.imgur.com/E8wIK.jpg)
Didn't want to double post:
@heyman
Our Railgun wallpapers conveniently don't collide lol.
Good news everyone! (TM) I got you some PSP! Panty, Stocking, & Pokemon
(http://i.imgur.com/OYrM1l.jpg) (http://imgur.com/OYrM1.jpg)
I love this one! A friend of mine watched this just to see the "Sailor Moon like" transformation scene each EP.
(http://i.imgur.com/jQmbNl.png) (http://imgur.com/jQmbN.jpg)
Clearing out this folder...
(http://i.imgur.com/8q1c5l.png) (http://imgur.com/8q1c5.jpg)
MMM... Laser Lights.
(http://i.imgur.com/IyTkUl.png) (http://imgur.com/IyTkU.jpg)
(http://i.imgur.com/wi8U3l.jpg) (http://imgur.com/wi8U3.jpg)
(http://i.imgur.com/bPH9Ll.jpg) (http://imgur.com/bPH9L.jpg)
(http://i.imgur.com/Keuibl.jpg) (http://imgur.com/Keuib.jpg)
(http://i.imgur.com/8Ov6Sl.jpg) (http://imgur.com/8Ov6S.jpg)
Meme Time
(http://i.imgur.com/vmBxLl.jpg) (http://imgur.com/vmBxL.jpg)
You've got balls, kid.
(http://i.imgur.com/objdIl.jpg) (http://imgur.com/objdI.jpg)
'Dead Dawn'
(http://i.imgur.com/1dhsAl.png) (http://imgur.com/1dhsA.jpg)
I wonder if wallpapers with a game-anime connection are allowed?
(http://i.imgur.com/OdOp0l.jpg) (http://imgur.com/OdOp0.jpg)
...well, I guess I'll find out if som1 complains. That should clear out my large PKMNs.
Oh, how I wish I could contribute some of my non-anime wallpapers! ...
Clannad. In spoiler tag because it's 29 of them.
(http://i.imgur.com/lprmtl.jpg) (http://i.imgur.com/lprmt.jpg)
(http://i.imgur.com/m5ziVl.jpg) (http://i.imgur.com/m5ziV.jpg)
(http://i.imgur.com/6c2r3l.jpg) (http://i.imgur.com/6c2r3.jpg)
(http://i.imgur.com/bwxxsl.jpg) (http://i.imgur.com/bwxxs.jpg)
(http://i.imgur.com/NGZTNl.jpg) (http://i.imgur.com/NGZTN.jpg)
(http://i.imgur.com/99SEMl.jpg) (http://i.imgur.com/99SEM.jpg)
(http://i.imgur.com/z6HLHl.jpg) (http://i.imgur.com/z6HLH.jpg)
(http://i.imgur.com/6cBx3l.jpg) (http://i.imgur.com/6cBx3.jpg)
(http://i.imgur.com/kmwYHl.jpg) (http://i.imgur.com/kmwYH.jpg)
(http://i.imgur.com/Ra7Jpl.jpg) (http://i.imgur.com/Ra7Jp.jpg)
(http://i.imgur.com/R3yN7l.jpg) (http://i.imgur.com/R3yN7.jpg)
(http://i.imgur.com/vVoPwl.jpg) (http://i.imgur.com/vVoPw.jpg)
(http://i.imgur.com/zYmAvl.jpg) (http://i.imgur.com/zYmAv.jpg)
(http://i.imgur.com/CFqIpl.jpg) (http://i.imgur.com/CFqIp.jpg)
(http://i.imgur.com/pW6FKl.jpg) (http://i.imgur.com/pW6FK.jpg)
(http://i.imgur.com/K7PN8l.jpg) (http://i.imgur.com/K7PN8.jpg)
(http://i.imgur.com/21guCl.jpg) (http://i.imgur.com/21guC.jpg)
(http://i.imgur.com/BcxfXl.jpg) (http://i.imgur.com/BcxfX.jpg)
(http://i.imgur.com/5tFG8l.jpg) (http://i.imgur.com/5tFG8.jpg)
(http://i.imgur.com/emQSVl.jpg) (http://i.imgur.com/emQSV.jpg)
(http://i.imgur.com/L9Qocl.jpg) (http://i.imgur.com/L9Qoc.jpg)
(http://i.imgur.com/OmtpSl.jpg) (http://i.imgur.com/OmtpS.jpg)
(http://i.imgur.com/ZEa9tl.jpg) (http://i.imgur.com/ZEa9t.jpg)
(http://i.imgur.com/fHRhNl.jpg) (http://i.imgur.com/fHRhN.jpg)
(http://i.imgur.com/f8cpXl.jpg) (http://i.imgur.com/f8cpX.jpg)
(http://i.imgur.com/gm1Qvl.jpg) (http://i.imgur.com/gm1Qv.jpg)
(http://i.imgur.com/0d02Hl.jpg) (http://i.imgur.com/0d02H.jpg)
(http://i.imgur.com/kcKgcl.jpg) (http://i.imgur.com/kcKgc.jpg)
(http://i.imgur.com/98MvZl.jpg) (http://i.imgur.com/98MvZ.jpg)