Re: "Wallace and Gromit starred in three animated short winners in the '90s..."
Not quite true, actually -- at least not as far as the Oscars go.
The first Wallace & Gromit film, 1989's A Grand Day Out, *was* nominated for an Oscar in 1991... but it lost... to another film directed by Nick Park, i.e. Creature Comforts.
Re: "Wallace and Gromit starred in three animated short winners in the '90s..."
Not quite true, actually -- at least not as far as the Oscars go.
The first Wallace & Gromit film, 1989's A Grand Day Out, *was* nominated for an Oscar in 1991... but it lost... to another film directed by Nick Park, i.e. Creature Comforts.