While I enjoyed portal, I'm not even remotely excited about portal 2. I'm not sure why. Running around solving puzzles with the portal gun is fun, I'm just not sure its $50 game kind of fun. So I'm waiting for the reviews.
Plus, I got REALLY sick of hearing about how "wonderful" the story to Portal was. Yeah it was funny, yeah it was interesting. But no, a homicidal computer is not exactly groundbreaking storytelling.