It's a TV show with Paul Gross starring (opposite his wife in rl). Three seasons, 6 episodes each. He's an actor/director at a theatre company in Canada plagued by mental breakdown and seeing the ghost of his mentor all the time (sound familiar?).

It very funny, very good, very much worth watching.

And it's the one where all the icons of PG stark naked from behind come from :-)

http://en.wikipedia.org/wiki/Slings_and_Arrows