I've been very pleased to see increasingly high-quality Scalable Vector Graphics (SVG) support built into browsers like Safari and Firefox in the last year or so. (And the recent Acid 3 browser test seems to have been coincident with a significant further quality increase.) I did some work with SVG when version 1.0 of the specification debuted in 2001, and found it useful and full of promise, so I was subsequently very disappointed to watch it become almost completely unsupported. My gratitude to the folks who've worked to incorporate it directly into Safari and Firefox (and any other browsers). SVG looks like it has a future again.
Anyone wondering about the significance of the terms "scalable" and "vector" in SVG's name need only open the clock in a separate browser window, and play with resizing that window. Resolution independence is a wonderful thing.