Hey Derek, I am going to do my best to talk you out of it, just so you know what you are getting in to when you switch from digital to film. I personally went from shooting film in the pre digital days, to digital, back to film, and now back to digital, so I have been there.
People will argue with this, but when you consider the gestalt, digital is cheaper.
First, you have the cost of the film rangefinder camera. If you want an interchangeable lens rangefinder camera and one lens that isn't going to be a piece of junk, the absolute cheapest you will probably be able to get in for is 300 bucks. 500 to 1000 bucks and up is more common. This means staying away from russian copies, because the quality control was just too all over the place, no matter how alluring they are. Also, if the camera you get doesn't have a built in meter, you will need a handheld meter, which will cost 120 bucks and up.
Second, you have to keep in mind that film rangefinder cameras have more things that can go wrong or go out of adjustment than the average japanese film slr. When something goes out of adjustment, it requires boxing up the camera, shipping it off to a technician, and waiting weeks for your camera to be fixed. These repairs or adjustments aren't necessarily cheap- the people that do good work certainly don't do it for free.
Third, you have the cost of film. If you just shoot black and white, you can get arista premium from freestylephoto.biz for 2 bucks a roll, and it is rebadged kodak tri-x. it is pretty much the best deal in black and white film at the moment, but every time you click the shutter 36 times, it costs 2 bucks, just for the film. fuji velvia color slide film, on the other hand, costs 6.50 a roll.
Fourth, you have to process the film. Here, you have two options. You can either have the film processed by a lab, which, depending on the lab, costs three to ten bucks per roll. alternately, you can process it yourself, which requires a darkroom, or at least a film changing bag, a reel and tank, graduated cylinders, chemicals, a thermometer, a timer, jugs for chemicals, a clean dry reasonably dustless place to hang your negatives, printfile negative holders, scissors, practice, patience, careful control over the temperature of your water and your chemicals, and a few inevitable screwups. Also, if you live in a place where you cant simply pour these chemicals (some of which can make you quite ill, particularly fixer) down the drain, you have to figure out how to dispose of the spent chemicals, which may or may not cost money.
Fifth, you are going to want to be able to have prints. Here, you have two options. You can either buy a scanner, which can cost anywhere from 150 bucks for a flatbed scanner to 2 grand for a nikon dedicated film scanner, so you can scan your negs and then have printing done through whoever prints your digital files currently. 99 percent of the time, the cheap scans you can get for a couple extra bucks when you get a roll processed are useless for printing. Alternately, you can print in a darkroom, and for that, you do need some semblance of a proper darkroom, so you can figure a couple hundred bucks for used equipment, and that doesnt include any chemicals, paper, or light sealing the room.
All of these costs, large and small, add up, and some of them don't go away. As you keep shooting, it keeps costing more and more money. I did the math the other day, and considering the cost of film alone, a Nikon D700 pays for itself in about 11000 shots, and now that the megapixel wars are pretty well wrapping up, modern current gen dslrs will be used for many more shots than that.
There you have it, the big picture of film photography. It is worth it to many, and it isn't to many as well. Think long and hard if it is worth it for you. As you can see, the camera and lens is only a small part of the equation. Does film have a certain je ne sais quoi that digital does not? Absolutely. With digital, you are stuck with the sensor you have. With film, you have all sorts of variety. Would the smell of the darkroom send shivers down your spine? If a photographer's heart beats in your chest, that is guaranteed. Is there anything more rewarding than walking out of the darkroom with that perfect silver gelatin print? If there is, it is probably either illegal or puts you at risk of contracting a social disease. My basic point is that, in dealing with photography, just like dealing with beautiful women, the romance don't come cheap.
A couple of things I would strongly suggest, separate from the above: Before you take a plunge, teach yourself a lot more about exposure. One of the best things to do is to try to determine the exposure from the light conditions, and then see how close you were when you check with the camera meter. When you already have a digital, learning those things on film is the difficult and expensive way to do it. Also, don't rule out an evil slr. There are a number of very small slrs that are very much like rangefinders with pentaprisms, such as the Olympus OM1 and 2, the pentax ME, and the Nikon FG and FG20. With the exception of some Olympuses, any of these cameras can be had for 100 bucks, often with a lens, if you hunt around. Leicas, Bessas, Ikons, Hexars, and all of the other interchangeable lens rangefinder cameras are great cameras, but most are not designed with the budget oriented photographer in mind. With whatever you choose, good luck, and we all looking forward to seeing more photography from you!