It's often useful and fun for students to experience well-known psychology experiments. Where can demo versions of famous psychology experiments be found online? 

Some example paradigms that might be useful include:

* [Stroop](http://en.wikipedia.org/wiki/Stroop_effect)
* [IAT](http://en.wikipedia.org/wiki/Implicit-association_test)
* [N-back](http://en.wikipedia.org/wiki/N-back)
* [Visual search, particularly pop-out effects](http://en.wikipedia.org/wiki/Visual_search)