I regularly shoot 35mm, 120, and 4x5. I shoot B&W(develop at home) and E-6(sheet film at home, roll film at a local lab) primarily, although there are some good C-41 films out now. Ektar 100 is great.
I'm a Nikon guy and own an example(if not multiple examples) of NEARLY every Nikon 35mm SLR made. Offhand, I'm missing a few Nikkormats, some of the 90s low-end cameras, an FM3a, and an F6. My most used bodies are my F100, F4, and any of the various F2s. I also use FM2s a lot.
If a rangefinder mood strikes me, I have a Leica IIIc and a Canon 7. The Leica is nice and solid, but not the easiest camera in the world to use. The split rangefinder/viewfinder is a pain, the rangefinder is dim, and both it and the viewfinder are small and squinty. Also, it needs an external finder for anything other than a 50mm lens(I have a Leitz finder, which is good but not great). The Canon, by contrast, has a nice, bright combined viewfinder and rangefinder with projected frame lines for-I think-28mm to 135mm, a swing open back, and a bunch of other stuff that makes it really nice to use. The problem is that it's massive. I use my Leica lenses on it, and the little collapsible 50mm Elmar is comically small.
I have 3 medium format systems-I use the Pentax 645 for 645, a Hasselblad 500c for 6x6, and a Mamiya RB67 for 6x7. My Mamiya is the most "complete" of the three, but the Hasselblad gets used the most.
For B&W roll film, I mostly shoot Tri-X and develop in D76. Ilford FP4+ is my go-to for sheet film, also in D76. I MOSTLY use Velvia 50 for color, but use Provia 100F if I want something a bit more controllable or even will use Ektar 100.
I was given a Pentax Auto-110 outfit not too long ago. It's a neat little camera, and I need to get some film for it(new 110 is, surprisingly enough, still available). Supposedly, this was the smallest SLR ever made. Also, out of curiosity, I picked up a Nikon Pronia 6i a while back. This is an APS SLR and can a pretty good selection of F mount lenses. My first roll, using film that expired in 2008, was pretty bad-I'm going to try again one of these days with the exposure compensation set to +1 and see if it improves any.
Also, while we're at it, can we PLEASE strike any use of the word "analogue" in reference to film itself out of the collective vocabulary?