He switched the Personal income tax cuts for a cut to GST - meets your criterion for a tax cut for all  Canadians,although neither could really be justified before the crisis. We did get the boost to consumer spending and it feds straight in to the economy. 

The companies that "banked" the money were the resource companies which is what they tend to do during a spike in resource prices. Other companies tended to invest which is why we say a pick up in non-resource fixed capital formation

Since we ended up with below average unemployment, hard to say it didn't create jobs - same as when Chretien cut the Corporation tax

I would love to see any academic paper linking a change to the Corporation tax to a change in the Multiplier - just looked through JSTOR and Google scholar but nothing is coming up. Intuitively it is hard connection to make - it would imply that Canada's economy should have shrunk under Chretien for example