Created by Jonathan Harris, the piece Phylotaxsis referenced in his image above "... illustrates the delicate balance between science and culture in our world. Without the randomness of culture, science becomes dry and predictable, imprisoned in a strict square grid. Without the rational thinking of science, culture quickly teeters towards chaos. Only when science and culture act as peers can harmony be achieved, expressed through the astonishing Phylotaxis shape. The individual beads of the Phylotaxis represent an ever-changing zeitgeist of science news in our world, populated automatically every few hours by a computer program that scours a slew of online news sources and blogs that focus on science." This piece of one of many by Harris that explores the realtionship between an ever-changing data-driven world and emotion or culture using beautiful, dynamic graphics.

The Princeton University Art of Science Competition is 'a celebration of the aesthetics of research and the ways in which science and engineering inform art and vise versa'. It offers a beautiful, uncommon view of investigation.
Seed Magazine has an ongoing series in which they highlight science art, with an emphasis on revealing the unseen for study and bringing out the beauty in natural patterns.
Make is a site for all kind of inspiring, technology related projects. Issue seven of their magazine is all about cool biology projects (hack your plants ... extract your DNA at home ... ).

Michael C. LaBarbera at the University of Chicago has a great page focusing on the biology and physics of scaling using Hollywood B movies as examples. From his page, "Size has been one of the most popular themes in monster movies, especially those from my favorite era, the 1950s. The premise is invariably to take something out of its usual context--make people small or something else (gorillas, grasshoppers, amoebae, etc.) large--and then play with the consequences. However, Hollywood's approach to the concept has been, from a biologist's perspective, hopelessly naïve. Absolute size cannot be treated in isolation; size per se affects almost every aspect of an organism's biology. Indeed, the effects of size on biology are sufficiently pervasive and the study of these effects sufficiently rich in biological insight that the field has earned a name of its own: "scaling"". As the evolution of scaling relationships is a major part of my research interests (see here, here, here, and here), I love this page. Even before I had found it, I used some of the same examples to introduce ideas of scaling relationships in the classroom.
A Fickr site featuring photos taken by scientists of science stuff. I think that photography can be a way to motivate students in many ways; it can get them involved in scientific inquiry, documentation, visual representation/communication of ideas, computing ...
1st Avenue Machine made an eye-popping, fantastic CGI/photography blend of a video for the song Sixes Last by transposing fantastic plant life in the real world. It's really cool and is a little more impressive way to introduce computer animation of biological things than straight biology or spielbergian dinosaurs. To see this piece, go to their website above and click projects -> Sixes Last. Or view a low-rez version here.
If straight biology is more to your liking, BioVisions at Harvard just posted a beautiful computer animated film, 'The Inner Life of a Cell'.
From the website. "September 2006 will see the first-ever international meeting focussed on the work of glass artists Leopold and Rudolf Blaschka. These 19th Century artists produced a fusion of science and art which has never been equalled. Art and science museums worldwide hold Blaschka sculptures, which are increasingly recognised for their historical, technical, and artistic importance. Bridging the gap between science and art puts the Blaschka’s work in a unique position, which is long overdue for serious study." ... These sculptures famously include anatomically detailed, scientifically correct models of hundreds of species of marine animals, and greatly magnified microscopic organisms. ... thousands of examples of three-dimensional flowers and plants rendered in glass. "
Information aesthetics is a weblog that "explores the symbiotic relationship between creative design and the field of information visualization, in an emergent multidisciplinary field what could be coined as 'creative information visualization'." Bla bla bla ... it's a great site that is difficult to explain without sounding silly. Some of the entries are really thought provoking. In particular, I enjoy the pieces on ambient information presentation. If you are interested in a projected wall wall art that dynamically displays traffic on your email, text, and phone lines or want new ways to visualize air global air traffic in real time, this is the site for you. For more details, see the site description here, but it's probably best to just check the site straight away.

Other sites that explore data visualization include Datavisualization, Flowing Data, and my personal favorite, Information is Beautiful. Check them all out; Form follows data.
Isabella Rossellini's award-winning series of very short films about the courtship and reproductive habits of animals. They are scientifically accurate, entertaining and informative. See them here. NOW!
Why do science presentations have such a uniform, boring aesthetic? Because not enough scientists read Grain Edit, that's why.