In 2008, it was then-cabinet minister Gary Lunn who wound up embroiled in at least a minor scandal over coordinated third-party expenses.
And in 2011, there's once again some sign of shenanigans afoot. In particular, a cluster of third parties based in Richmond, B.C. - including two individuals registered at the same address - turned up in Elections Canada's third party advertising report. And it'll be worth keeping an eye on what further connections develop, as well as what the supposedly-independent ads actually said.