Years ago I ministered for Pastor Tom Copple in Orange County and it was a wonderful church. I really like them. They are UPC.
www.SpiritandTruth.net
Also Pastor Mark Pryor has been a personal friend for years and he pastors in Orange I think.
If you are looking for a KICKIN', Worshiping, Powerful Church were the WORD is preached in Power - I recommend Free Chapel Orange County. We attend Free Chapel in Gainesville, GA and Pastor Jentezen Franklin is one of the most powerful Pentecostal Preachers you will find. Around 20,000 come through our GA campuses on an average Sunday and I think around 3,000 - 4,000 attend in CA. The services in OC are at 4 & 6 PM.
www.FreeChapel.org.
You will see peoples lives changed and ministered too and they leave changed and happy when they leave the building!