The season of mud-slinging has hit a new low as this Michael Ignatieff-bashing ad takes its place on YouTube. On one level, you have to admire it for the depth of research. On the other hand, should a candidate really be defined by the way he selected teammates when, as a person much younger, his politics were not yet fully formed?

Watch for yourself and see if you think this latest ad ratchets the bar so far down for negativity that it's, well, funny. We tracked down and tried to interview the filmmaker mastermind who cooked up this thing, but Mark Leiren-Young said he makes it a policy of never responding to Tyee requests.