Jerry Schad is the writer of the Roam-O-Rama article in the Reader, but most of the time the hikes are up in the LA/OC area.
As mentioned, Iron Mtn, Stonewall is a GREAT hike with a great view. We do that one every X-mas morning. Mission Trails is great, and right next to Cowles.
I remember going on a hike that we found from Roam-O-Rama off of Wildcat Canyon. It was fun because it was a part of the county that I never remembered going to before.
I'll see if I can find directions...
edit: Oh wow! Here's all you need right here (unless you get Schad's book)