In 1999, Lawrence joined Robert Forster, Ashley Judd and his brother Andrew Lawrence for the family drama "Family Tree." Then in 2002, Lawrence portrayed a high school quarterback helplessly in love with a cheerleader (played by Rachel McAdams) who, is turned into a thirty year old man (played by Rob Schneider), in "The Hot Chick." Lawrence was three years old when he first stepped in front of the cameras as the son of Sammi Jo (Heather Locklear) in "Dynasty" (ABC, 1983). Two years later, he was Mark Hudson's son on the short-lived sitcom "Sara" (NBC). In the final (1986-87) season of NBC's "Gimme a Break", he appeared as Joey's half-brother, both being raised by Nell Carter. He was again motherless in "Walter and Emily" (NBC, 1991) as a youth being raised by his grandparents (Cloris Leachman and Brian Keith). Lawrence occasionally played his big brother as a youth in flashback episodes of NBC's "Blossom" during that series' 1991-95 run, but he picked up his own teen following as the star of the syndicated "SuperHuman Samurai Syber Squad" (1994-95). In the latter, he played Sam, the only person on earth who could stop megaviruses from taking over the world's computers.
Lawrence has also been in several spotlighted TV-movies, including the title role as the real-life burn victim in "David" (ABC, 1988), as John Ritter's son in "The Summer My Father Grew Up" (NBC, 1991), Along with his two brothers, he co-starred in the Western adventure pilot "Brothers of the Frontier" (NBC, 1996). Lawrence made his film debut as Little Neal--with Steve Martin as Big Neal--in John Hughes' "Planes, Trains and Automobiles" (1987). He is probably best recalled, though, as the son of Robin Williams and Sally Field in "Mrs. Doubtfire" (1993).