When it comes to campaign ads I generally believe you should attack the policy, not the person. Obviously, I've been incredibly displeased with the Conservative party over the last 5 years because of this. 5 years of personal attack ads, even when there wasn't an election! First it was a personal attack on Dion, then Ignatief, it's just ridiculous. After 5 years of this, I've had enough.
Though the facebook creeper ad at the top was a tongue-in-cheek joke referring to a real incident where the girl on screen was kicked out of a Harper speech for having a photo of herself with Ignatief on her facebook. I'd view that one in particular as being harmless fun, less a serious attack ad.
The attendance ad I found relatively reasonable as well, mainly because it has a point rather than being a cheap shot. The two people I would absolutely expect to be there no matter what are the Prime Minister and Opposition Leader...barring of course emergencies or real health concerns. Layton would have been there 100% of the time if it weren't for his surgery, that's the kind of work ethic I would have expected from Harper and Ignatief.
On a side note, I find it funny how the Liberals keep advertising that they're responsible for bringing Universal Health Care to Canada. It was Tommy Douglas of the NDP that started the Universal Health Care movement and fought the long battle to get it instated, the Liberal's were merely the governing party at the time and caved in to pressure. Taking credit for another party's hard work FTL.