Oh, I FOUND it:
The Playboy article (Darn PG-13 meter - ruins all of the good stuff) I'll have the link on my LJ.
"PLAYBOY: What are your three distinguishing characteristics?
HELGENBERGER: My laugh, my hair color and my parties. I throw really good parties."
ETA:
Love #10:
PLAYBOY: What's your favorite bedroom scene?
HELGENBERGER: It's in Species, and it was with Michael Madsen. It was kind of raucous. I just decided to make it fun and playful. We tripped over each other and fell to the ground. That kind of kick-started it. I remember once I took a flying leap onto him on the bed. And there was the time I tackled him. It was more playful and feisty than your typical sensuous love scene.
NOW- my question is: NOT GEORGE CLOONEY?! Or was this article before the ER bed scene?