I believe peak wait times today at the MK headliner attractions were as follows:
Space Mountain: 55 minutes
Splash Mountain: 70 minutes
Big Thunder Mountain Railroad: 55 minutes
Peak wait times for yesterday, Wednesday, and Monday are on the crowd blog at the Unofficial Guide's website.
These waits corresponds to a 7 on the Unofficial Guide's published scale. The Guide's official website prediction for today, using the "old" crowd model, was a 5, while the latest model predicted an 8.