Yeah, yeah, I know. It may seem like overkill to write a three or four panel web comic using a professional screenplay writing program like Final Draft but this process really helps me plan and organize exactly what I will be drawing in each panel. Believe it or not, drawing a comic strip is not that different from shooting and editing a movie.
Also, writing these ‘mini-plays’ is great practice for writing bigger and more ambitious projects. (I’ve got lists for those too.) At this stage, the dialog, pacing, or even the entire structure of the comic may change drastically from the original idea. (In this case, it did not.) Once I start drawing the strip, I pretty much stick to the script
Of course you don’t need Final Draft to write a script. Any word processor, like OpenOffice.org for example, does the job just fine.