CBS TV on DVD has released previews from the DVD special features for all three CSI series. Click each link to watch the clips for CSI: Crime Scene Investigation season eleven, CSI: Miami season nine and CSI: New York season seven.
I was contemplating getting the S7 NY DVDs - I didn't buy either S5 or S6 - but focusing on Lindsay even a little bit in the extras is enough to make me say, "no thanks."