He would later make a special guest appearance in the second season's Halloween episode titled "Boo".
The Waterboy sparked a fast friendship, and ongoing professional relationship, between Sandler and Winkler.
Within months of the program's cancellation, he and John Rich had collaborated to establish Winkler-Rich Productions; whenever Rich or Ann Daniels was uninvolved, his company was called Fair Dinkum Productions.
He chose the name in a nod to Australia, where 'fair dinkum' is a common Australian term suggesting a person or thing 'direct' 'honest' 'fair' or 'authentic'.
Winkler had a recurring role as incompetent lawyer Barry Zuckerkorn in the Fox Television comedy Arrested Development.
C"), Law & Order: Special Victims Unit, Third Watch, Arrested Development, Crossing Jordan, Family Guy, King of the Hill, and Kick Buttowski: Suburban Daredevil. and in one appearance, while substituting for Steve Edwards, Winkler reunited with fellow Happy Days cast member Marion Ross.
Winkler was also one of the hosts of the 1979 Music for UNICEF Concert.
After Happy Days ended, Winkler concentrated on producing and directing.
Winkler said he was very anxious as a child because of his undiagnosed dyslexia. At Emerson, he was a member of the Alpha Pi Theta Fraternity. As Winkler said in a TV Land interview, "It's hard to look cool in a green windbreaker".
He said he was considered to be "slow, stupid, not living up to my potential." He said his father spoke 11 languages and could do math in his head and did not understand Winkler's problems at school, where Winkler would celebrate a C grade. Marshall argued with the executives about the jacket. Winkler could only wear the leather jacket in scenes with his motorcycle, and from that point on, the Fonz was never without his motorcycle until season 2. During his decade on Happy Days, Winkler also starred in a number of movies, including The Lords of Flatbush (1974), playing a troubled Vietnam veteran in Heroes (1977), The One and Only (1978), An American Christmas Carol (TV movie, 1979).
When Winkler moved to CBS for one season to star in 2005–06's Out of Practice, his role as the Bluth family lawyer on Arrested Development was taken over by Happy Days co-star Scott Baio in the fall of 2005, shortly before the acclaimed but Nielsen-challenged show ceased production.