Clark Kent = 27 years old http://www.imdb.com/name/nm0919991/
Lana = 22
Lex = 32
Chloe = 22
One Tree Hill
Lucas = 23
Peyton = 22
Haley = 23
Brooke = 22
Paris (now Sophmore in college at 26 was in high school at 22 when the show started)
Lane (also 2 years out of high school... at 30 years old)
Are all "high school" kids on TV really old enough to be out of college?
No wonder there is such preasure on teens to look and act like adults.
Yes, yes, I know. Stockard Channing was 30 when she played a high school-er in Greese.