I've noticed quite a trend in the casting threads, it's either sc-fi favorites like BSG, Firefly, Stargate, etc. or it's the teenie bopper emo dramas like Friday Night Lights, The OC, One Tree Hill, etc. that get a lot of votes in.
Adam Gregory for Superboy {Kon-El}.
Sara Paxton-Wonder Girl {Cassie}
Couldn't think of anyone else