I have a little experience with this as a student because last term I took a class in which one of the core projects was a collaboration with other classmates in creating a wiki. The result can be seen at http://ed633.wikispaces.com/Working+Group+15. It was a good experience, but, perhaps it was an online class, the communication between group members was quite limited. In retrospect I can see how it would be better if our group would have chosen a leader who would pull the content provided by different members into a visually attractive presentation including, for example, consistency in font, font size, layout, and colors. At the end of the project I wanted to do this, but when I offered to give it a shot I received no feedback from my teammates. I was afraid of touching content created by other members, so I let it go. Also, I thought that this wiki could have been spiced up with multi-media content such as videos, podcasts, and pictures.
In preparing for this assignment, I read all the wikis linked to in our class Moodle, but none of them really caught my interest. I then went to Wikispaces and did about ten keyword searches. All the wikis in my area (Education for Adult ELLs, ESL, ESOL) were by and/or for teachers. I looked at a variety of wikis for teachers, although they were not the kind of wikis this assignment addresses because they included no student-generated content. Some of them were impressive. My favorite was The Connected Classroom at http://theconnectedclassroom.wikispaces.com/ because it clean, simple, easy to navigate, and included just the right mix of multimedia presentation.
I turned my attention, then, to wikis with student-generated content. My favorite was created by the Mount Carmel Area High School (currently active), part of the Flat Classroom Project which connects classrooms in various countries. The address is http://problemsofdemocracy.wikispaces.com/. It is extremely rich in media. The front page is Flash media, including a video and all the link buttons. The vibrant colors and artistic images are powerful, demonstrating the creative power unleashed in such a project. This was just one of many Flat Classroom Projects I looked at. An example of a finished wiki created by one of these projects can be seen at http://flatclassroomproject2008.wikispaces.com/Web+2.0. The videos produced by the students involved were innovative, informative and of a high quality.
Another excellent wiki was modeled after a Wikipedia entry. It was created by a high school history class looking into the Amistad incident. It has detailed background and factual information accentuated by pictures and links. This kind of page is a product-oriented collaboration, rather than a process-oriented one. This is an example of internet technology being used for collaborative creation of an end product which can be contrasted with the more traditional approach of each student writing an essay on the chosen topic. The wiki is at http://kmsamistad5.wikispaces.com/.
Another wiki I liked was a simple one created by a second-grade class. It includes audio and text. It has links to pages made by each student in the class where they can post their writing. This could help students develop a sense of ownership and pride in what they produce. This page seems to function very much like a blog in that students post to their own pages rather than collaborating on one page. It is obvious that they do not edit or change content posted by other students. I personally prefer wikis where students collaborate on producing content. This wiki is at http://mrsibrahim.wikispaces.com/.

Note - How this entry was created.
I inserted a table with the correct number of rows and columns. Then I inserted the text. Then I went to the wikis and captured screen shots using Gadwin Printscreen and saved them as jpegs. Then I inserted images and uploaded the picture files of those screen shots. I added a link in each one to the wiki.

Jonan Donaldson