Michael J. Fox doesn't seem to be letting Parkinson's Disease slow him down. The actor reportedly took a break from taping his hit comedy "Spin City" in Manhattan last weekend to chat and joke with fans. Asked if his wife, actress Tracy Pollan, is putting her own career on hold and staying home with their three children, Fox quipped: "Presumably. But who really knows what goes on on Friday nights." Turning serious, he said Pollan has shot a pilot for a new TV show and is waiting for word from a network. When an aspiring actor asked for tips on breaking into show business, Fox recounted how he broke into TV more than 20 years ago, beginning with his early days on Canadian TV, followed by a succession of guest spots on American TV and a couple of small movie roles -- all leading up to his star-making role as Alex P. Keaton on "Family Ties" in 1982. "Just do that," Fox said.