Enterprise: Shockwave 2-parter, and Carbon Creek.
I don't know why the latter is hated so much. Granted, it's not a great episode, but it IS a fun and enjoyable one.
Carbon Creek is a hated episode? I liked it, even though I remember a controversy around the whole Velcro invention. Still, it was very enjoyable and anything with T'Pol ended up being a very interesting episode anyway.