There are others
One I know of is a fungus that infects houseflies, making them (male or female) adopt a mating stance in death so that other flies will be coated in spores when they try to mate with the fungus-bloated corpse. I hate flies lol...
I also read an interesting theory that our evolution is partly governed by the action of viruses, which are capable of slicing off bits of DNA and carrying them to another species, where they insert them and change that species.
The theory held that, instead of the virus being a malicious thing that tried to hurt you (I've always wondered about that. Harming the host is not a good survival technique for a parasite.), instead it is trying to CHANGE you so that you can tolerate it, and your children can carry it without any ill effect.
DNA is simply a chemical, as are viruses. Tiny crystals... We all are at the whim of our chemical nature anyway, our moods are governed by the chemicals in our bloodstream and even something as simple as a cup of coffee could in theory mean the difference between being run over by a bus and a miraculous escape, so its no real surprise to me.
Its just the sheer scale, I had no idea that 2bn of us carried Toxo, or that it was as significant a disease as Malaria.
