My day started yesterday at about 8 a.m.There was no time for breakfast, but I was able to down a quick cup of coffee before heading to the Kari Feinstein Style Lounge to interview Emily Blunt about her new movie Sunshine Cleaning. (The movie, costarring Amy Adams and about two sisters who open a crime-scene cleaning company, is one of the most buzzed about flicks of the festival). I’ll have more of my chat with Ms. Blunt later this week, but I must tell you that she revealed something quite, um, big about her singer boyfriend, Michael Bublé. When one of her posse handed her a box of size XL condoms from Proper Attire, she laughed, “These will be good for Michael.” I finally grabbed something to eat at the MySpace Café at the Lift, where Tom Arnold barreled in and quickly explained why he was so, well, wet. “I’m a sweater,” Arnold said while wiping his forehead with a napkin before taking off for a ski-lift interview with David Carr of the New York Times. “I sweated when I was on cocaine, and I’m still sweating when I’m off cocaine.”I walked across the street to the Reaction suite and In Touch café, where Colin Hanks was spotted sipping Divine Chocolate Hot Cocoa. Paris Hilton was in the night before when the space became the nightly Park City outpost of New York City nightclub Stereo. She actually showed up between the parties for the Woody Harrelson flick Transsiberian and the launch of An Amiga, a Facebook-like Website for dogs. Yes, dogs! “Paris just walked in and sat down,” an eyewitness told me. “There was no music, and the lights were fully on. She just waited for the party to start.” Hilton ended up partying till 6 a.m.  at the 5W Escape House. My fellow party hopper Cristina Gibsonand I both heard that she spent much of the time making out with Simon Rex. (Kim Kardashian was also at 5W, swapping spit with boyfriend Reggie Bush in the Lifestyles condoms booth.)

In town to play the Los Angeles Clippers, Phoenix Suns guard Steve Nash (right) went out to lunch yesterday with his wife, Alejandra (center), some random guy (black jacket) — and Jessica Alba (left) and Cash Warren (center). Weird group, right?

So not only did Cash Warren knock up — and get engaged to — one of the hottest women in Hollywood, but he hangs with the two-time NBA MVP, too! What’s the deal with this guy?