About a year ago I found an old Olympus Pen EE in a box of junk. It's very cool as it does half frame and has the photocell (that powers it without any battery) surrounding the lens which makes it look pretty interesting. I've been shooting with Rollei Superpan 200 film. It's fine grained so makes up for the half frame. (Not that I'm avoiding grain or anything.)
It's fun to use. I find the lens is really good for half body portraits. Landscapes are fine (but a less interesting topic for me).
It's partly shooting on film and the cost of that which makes shooting with it somehow special. Also the look of it is a conversation piece when asking someone to pose. The aperture and shutter speed are automatic, only the focus is manual (which I sometimes forget to set.)
When I first started using it I was intentionally shooting retro subject matters to go with the look but now I just shoot anything even if there is modern elements in the frame. It's part of the "look of today" I suppose.
I always take a digital picture of the same thing when shooting with it. I suppose to have some instant gratification but also as a backup in case the film image didn't turn out or something. Also as a good comparison of the two mediums.