2 5D's, D700, Fujifilm S5, Fujifilm UV-IR - used regularily - Less regularily used film cameras 2- F1's and 2- EOS 1Vs. On order 5D MKII. my recent week long camping trip took all the DLSRs and an F1.
I'm not a pro, but I have 7 SLRs: EOS 3, Elan, Fm3A, EOS 3, EOS 40D, EOS 50D, EOS5D & EOS IX. The IX and Elan haven't been touched for many years but are less valuable than the postage it costs to mail them. I also have an ancient Miranda F (no meter!) and a 1952 Zeiss Ikonta I use as paperweights.
Rebel xt and EOS 3 are my main bodies now, I guess. but when I can I 'borrow' my mother's 40d and I have a film rebel and minolta sr-t and I use whatever I can get my hands on from school as well which has so far included a fuji 690, mamiya 7ii, and Nikon f3.
but usually no more than 2 at a time or I feel ridiculous.