This is a cool visual effect that makes things ripple and change size.
If you have photosensitve whatyoumacallit, don’t use this, it may be bad for you.
This is a pretty neat site on the whole, check it out.
If you know of any other simialar sites, please share.
Post you thoughts and enjoy. 
Pretty cool. These links aren’t really the same kind of visual illusions, but I like them anyway.
AOL Video - Serving the best video content from AOL and around the web - AOL.com (Count the passes)
http://www.news.com.au/dailytelegraph/story/0,22049,22535838-5012895,00.html (what way is she spinning?)
Holy crap! That first one is fantastic! I totally did not see
the big hairy gorilla.
I think that is actually enhanced by the poor quality of the video.
<Cartman> Sweet. </Cartman>
I’ve posted on here before about getting a similar effect after playing Guitar Hero. I love the human brain! 
Especially with scrambled eggs and some bacon salt.
Neat effect. Going to have to pass that one around at work.
Holy crap that second one is bothering me so much. SHE WILL NOT CHANGE DIRECTION.
Same here. Is she moving clock-wise for you, too?
Yes. Anyone know the reasoning behind this thing? Like why she would look different to different people and what that’s got to do which hemisphere you use the most? I mean I know that the two columns with the list of functions are lazy generalizations at best, but I’m curious as to what would cause the people to see that gif differently.
eta: does anyone know of a program that I can use to view and manipulate .gif files? specifically making it play backwards?
Make that 3-0 for clockwise movement, lets find someone who sees it moving counter clock wise, if not then this is a false statement.
Same as ivan, clock wise and not changing directions
What I love about this one is that when I do a particularly left brained activity (say, my algebra homework) for a while and then look at this page, she’s spinning anti-clockwise from the start. When I’ve just spent some time reading or talking about my feelings, she’s spinning clockwise from the start.
I can make her switch either way, but the “mode” my brain is in determines which direction I see her spin when the page first loads. Right now, she’s spinning clockwise, and it was very hard for me to get her to switch at first.
Tip: focus on the foot she’s spinning on. It’s fairly easy to get it to move either way, as long as you’re not looking at the rest of her. The let your eyes move up once you’re convinced the foot is spinning the other way.
I saw it turn counter-clockwise for a few seconds, but it appeared very choppy. Can’t seem to make it happen again though. 
ETA: Nevermind. Whynot’s trick worked for me.
She started out clockwise for me, and I made her change direction by blinking at the image a few times. Got her to change back to clockwise by doing the same thing.
That is the coolest part of the whole damn illusion, that you can do it by choice. I didn’t realize. Thanks!
Damn, that is weird. I can’t quite do it at will yet, but I’ve seen it happen. Anyone got any ideas how that works then?
I can’t for the life of me get her to spin counter clock wise and I’m trying hard to get the foot she’s standing on to go the other way.
I even tried to put my finger on that foot and mimicked counter clock wise movement, I can’t do it.
:mad:
On first view, the woman spins anti-clockwise for me. She switches to clockwise quite easily, but it’s a bit harder getting her to go anti-clockwise again.
Looking at something else for a minute and then looking at her again, she’s back anti-clockwise.
Clockwise and she won’t change direction too.
Any left-handers seeing her go anti-clockwise first?
I saw her turning counterclockwise mostly, but if I look away for a bit I can sometimes get her to spin the other way.