Huh..I thought there were a lot more.
Ubu Productions, Inc., is an independent production company founded in 1982 by television producer Gary David Goldberg. Ubu's notable productions include Family Ties (1982–1989), Brooklyn Bridge (1991–1993) , and Spin City (1996–2002).
The following programmes were all made by UBU Productions which used the labrador/frisbee device with the voiced line "Sit Ubu sit, good dog" as it's screen.
"Art of Being Nick, The"
"Battery Park"
"Bronx Zoo, The"
"Brooklyn Bridge"
"Champs"
"Day by Day"
"Duet"
"Family Ties"
"His & Hers"
"Making the Grade"
"Open House"
"Spin City"
"Bye Bye Love"
"Dad"
"Disappearance of Christina, The"
"Family Ties Vacation"
"Knights of the Kitchen Table"
"Must Love Dogs"
"Shooter"
http://en.wikipedia.org/wiki/UBU_Productions
http://www.imdb.com/company/co0060022/