Thought these might help DIYers. Videos are very well-made and informative. I've been passing them around to all my geeky (and non-geeky) friends.
http://vimeo.com/2284258
http://vimeo.com/2490503
http://vimeo.com/3386456
Edit: Click through to each video. Sorry, couldn't get a vimeo file to embed.
Edit edit: And a bonus link, with stompbox applications for capacitors at the bottom:
http://beavisaudio.com/techpages/Caps/