This is actor-comedian Paul Reiser's production company. This name comes from the 1982 movie, Diner, in which he starred in. A scene in the movie has his character talking about his discomfort with the word "Nuance".
1st Logo (1987)
Logo: On a black background is "NUANCE PRODUCTIONS" and below is two blue lines, making an equal sign.
Music/Sounds: The closing theme to the program.
Availability: Appears on Paul Reiser: Out on a Whim, which is available on VHS from Vestron Video.
2nd Logo (September 23, 1992-December 18, 2019)
Logo: On a gray marble background, we see the text:
in Times New Roman Italic in black. Then a hand (presumably that of Paul Reiser himself) reaches in and moves the first word up a little.
Variant: Starting in 2011, the logo was later remade for HD with different hand footage.
Technique: The live action hand moving "Nuance".
Music/Sounds: No music, but we hear a sliding sound as the hand moves "Nuance" up. NBC and Fox airings used a generic theme. Starting in 2017, it has a different sliding sound.
Availability: Seen on Mad About You, and the direct-to-video movie Popeye's Voyage: The Quest for Pappy, as well as a Fox airing of said movie on December 17, 2004 and December 30, 2005. It was also seen on The Paul Reiser Show and There's... Johnny.