They are famous for their stop motion / clay animation productions such as famous movies like "Chicken Run", Uk Television programme "Creature Comforts", most recently created "Flushed Away" and obviously the Wallace and Gromit series including the movies such as "Curse of the Were-rabbit".
All of these their style of animations are created through stop motion and reflects and explores the possibilities of creating stop motion animations.
I also found that today is the 20th anniversary for Wallace & Gromit, through the change of googles logo on there main search page !!!