Another reason for a high-power light and a bell. Joggers run in the street because asphalt is softer than concrete, and usually streets have less of a slant. I agree that it's annoying, but look at it this way: Cyclists complaining about joggers in the bike lane is sort of like drivers complaining about cyclists on the streets. The reason I say this is that most "bike paths" are really MUTs or multi-use trails.
What annoys me the most is joggers who run in the street, dressed totally in black, in the dark, with no reflective gear, in the direction of the traffic. It's amazing how many joggers dress like this. Do they have a death wish? I put a bell on my commuter bike for that reason soon after I started riding to work.