I recently saw a nice write up on the rear cam seal replacement. That's why I took a look at mine, from the little I could see it definitely looks like I have a leak there. From what I can tell it seems like the valve cover gaskets might be leaking too, and possibly something behind the timing belt covers.

Did plugs and wires -- oh, maybe 60-70k back.
Drained trans completely/replaced filter around the same time.
Haven't flushed brake fluid - I'll keep that in mind.

I'm most concerned about the stem seals. I think I'll be fine on the rest of the repairs.
I shouldn't have any problem getting down to removing the valve covers. After that I'll be doing a lot of head scratching.