Quote Originally Posted by Tavrobel
One Tree Hill IS the same as the OC, but it's on the WB.
OC: Four rich kids (and occasionally two tag-alongs) and their parents getting into all sorts of both realistic and unrealistic situations. Has touches of comedy, and tends towards fantasy (ie unrealistic).
OTH: 6-8 main non-rich kids (with about four non-rich kid friends who feature regularly but never as main characters) and their parents getting into all sorts of both realistic and unrealistic situations. Stays serious, and tries it's best to stay at least somewhat realistic.

I like OTH better because there's more variety due to there being more decent characters. The O.C. has Seth, Summer and Sandy. The rest of 'em suck.