I was just looking around the <a href=http://zvex.com/>Zachary Vex website</a>, and some of the effects are very cool. The most intriguing to me was the Ooh Wah. It basically sounds like someone is switching on and off various filters in sych with the tempo of the song... You can program it in up to 8 steps of wah, which will be cycled as per your settings. Nuts. Actually, I just described the Seek Wah. The Ooh Wah does all that, and has another footswitch - the Random switch. This sends the sequence cycle into a random order (I think; maybe it just randomly picks intensities and forgets whatever settings you have). There are sound samples on the site. I highly recommend you at least download the sample of the Ooh Wah. All of his effects are handmade and handpainted. For this reason, they are quite expensive. They may also contain some electronics that are expensive for him to buy. But I would still love to have one.