I'M NOT A POD USER!
but i play one on tv......
i used to use a rack mount effects unit, and on occasion would simply crank my studio monitors loud enough, and stand right in front of them, as i tracked using direct sounds.......
i was able to coax usable feedback from that setup........
but probably the best idea is sonixx idea, of splitting the sound and putting it through an honest to god amp.......
which, in retrospect, seems to be defeating the purpose of using a pod, unless you just prefer the sound of it......
personally, if i had a pod, i'd take a feed off of it directly to hard drive, then take a split signal and send it to a small amp (boogie is my preference) set up for a completely original sound, blending the pod sound with it's own, and mic that, and then blend the 2 tones together (probably with some phase inversion between the 2 tracks.....)