Here are some interviews of Kristin as well as some commentaries and articles. I just got some randomly, but picked out the interesting ones. Some of them surprised me, to say the least.

Warner Brother's Interview: 2001 - Kristin talks about her character Lang Lang, during the pre-Lois days.

Fashion Magazine: 2003 - Kristin talks about her dark side (I didn't even know she had one) and why she prefers Lex Luthor over Clark Kent.

The Art of Being Kristin - From the official WB site, Kreuk summarizes the main points of her life.