The Holga 135BC is simply fun to shoot. My example has lost its focus guide so I've replaced it with simple Sharpie dots to indicate close-up, portrait, group, and landscape settings. Using the wide angle lens requires setting the focus at infinity and forgetting it, which makes shoot-from-the-hip street photography incredibly easy. The shutter has a quiet click, so you can shoot in public without attracting much attention.
I think I don't shoot this camera enough. Lately when I feel like a Holga, I tend to use the medium format version. This one is easier to pocket and takes up to 36 shots per roll.
For this week's project, the BC was loaded with Fuji Pro 400H. I've actually been carrying it intermittently for a few weeks, as 36 exposures can be a lot. :-). The results are nicely funky, with a strange centered artifact from the wide angle lens.