No, there isn't.
Michael (from Telltale) had a few Steam keys
available for Jurassic Park earlier in the week, but he might be out of them (and will be out of the office for the rest of 2011).
I am a community moderator, here to assist, keep the peace, and keep these boards clean and friendly for all. I am a volunteer, and not a Telltale employee, and my opinions are my own.