This generation is highly visual; with the amount of images, maps, info-graphics and other digital media at our disposal, there's no need to have a science class in black and white. I know that I always perked up at my desk when a teacher was showing something that looked really cool, and I think that so many science-related topics can be aesthetically intriguing, at the very least.
If you're looking for some stimulating material, this website seems to have a wealth of beautiful imagery available for download; the site description: "Weather, sky and environmental stock imagery for broadcast, new media, web sites, advertising, theater, science centers and earth science educators."
It might be worth a look, whether you teach weather (hah) or not. I was fascinated by this video of lightning, captured at 7,207 images per second: Single Stroke CG in High Speed - Royalty Free Stock Weather videos and photo. Check it out and be amazed!