StudioX64 do a great C64 sprite ripping util on their website: http://www.studiox64.com Ideal for grabbing those images in old games, especially to create animating gifs Then maybe my opinion is slightly biased.
Might have to have a look at this as I plan on writting a C64 demo at the end of this month.. Just for a laugh you understand.. But thought I would get soe pictures and video of making a demo with Froodle (Hi rich) doing some of the GFX.