LOL
The only dedicated fx processor I have are those inside the mixer which are usual standard stuff and a Behringer V-Amp pro and Bass V-Amp pro guitar processors as I play guitar and bass as well (sort of at least

).
I use all the of them with various sound sources - playing the drum kit through a bass guitar processor can be quite fun - not to mention putting the foundations to your house at risk
Sax played through a guitar processor is quite sick (in a sick puppy kind of way) as well...
The main device that I use as an fx processor is however my v-synth - I use that for anything from a playable a filter bank (ie keys control the filter centers, aftertouch controlling various filter and fx mods etc) to a vocoder withthe VC2 card and also the COSM fx and amp model are very useful - it sounds alot better than the behringer units when fed from a synth sound source. One real nice thing you can do with the v-synth is ring mod external audio with one of its oscillators for a real mess
I also use my KS-Rack as a additional filter stage - mainly because of its overdrive control on its filter, but sometimes use its vocoder to blend external sounds as well with the KS-Rack's own synth.
I fully expect I'll try similar thing with the virus - maybe try stacking 16 filter patches to make a 16 way 2 stage filter bank for processing external audio would be fun for abusing loops - who knows?
I just like trying wierd sh*t - most of it just sounds wierd and sh*t, but sometimes you get real gems
My real weakness I guess is I tend to view fx as an integral part of a part's sound and so I like to have my chain live when Im messing around rather than in VSTs for post record processing. I keep thinking of getting one of theose Korg Kaoss pads - they look like alot of fun - I like stuff you can really mess with rather than just program. Its why I really like the v-synth as both a synth and as an fx processor - its immediate - you just do it rather than have to think about it
