Walker has written over 30 stage scripts and has also written many television shows, radio shows, and also some movies. Some of the television shows that he had written for were
Due South,
The Newsroom,
This is Wonderland,
The Line and
Living in Your Car, and the film
Niagara Motel. Most of his screen projects are cowritten with
Dani Romain. Walker was first known for his playwriting. In 1997, he published a cycle of six new plays, all of which took place in the same suburban motel room. He wrote plays for most of his career but since 2000 he has worked more in television and film. His 1977 play
Zastrozzi, The Master of Discipline was featured in the 2009 season of the
Stratford Shakespeare Festival at the Studio Theatre. In 2006, he was made a Member of the
Order of Canada. In 2009, he received the
Governor General's Performing Arts Award for Lifetime Artistic Achievement, Canada's highest honour in the performing arts. ==Plays==