It's the wrong trousers, Gromit!
One of the best films ever: Wallace & Gromit in The Wrong Trousers
This clay animation won the Oscar in 1994 for the best animated short film. I always wanted to see it and finally had a chance to see it tonight. Must watch the others in the series. They are available on DVDs. I think Ashwini will like them, too.
Speaking of clay animation… here is another nicely made short film Horn OK Please, by Indian and Irish animators.