With Gif Animations, Less Is More!
With Gif animations, it's often the simplest solutions that can be the most effective and eye-catching, drawing the user in without trying to assault them with something too clever or too obvious. With Gif animations, less is more. (A sense of humor doesn't hurt either.)
In lieu of Flash design, consider a simple gif animation — the download time is likely to be quicker, and the gif animation will display (and play!) on cellphones.