I feel for Maria. The lengths they go to (unintentionally) ignore her... LOL.
Gotta give Isumi a ton of credit for going all out to help send the priest to heaven. Damn, that priest is sneaky. But it made for some great laughs. Plus, Isumi didn't want to take any chances of a repeat faceplant. That skirt hem went from ankle high to significantly less so.
Hayate wasn't the only one who couldn't place Haru the maid. She's pretty outstanding as a maid IMO.