My favorites were the Ameriquest "Don't Judge Too Quickly" ads.
The doctor saying "that killed him" (referring to a fly as he stands over a man in a hospital bed - and with the patient's wife and daughter walking in - the balloon slipping from the kids hands was a nice touch), and the ad where the lady trips getting out of her seat in an airplane and ends up straddling the guy next to her.
A great collection of all the ads is
here (with a couple of "banned" ads)