Rebecca Northan plays Diane MacLeod, Alice's mom, on "Alice, I Think". She's a grown-up hippy, believes in animal rights, protesting, and vegetarianism. Alice is embarrassed by her, but what kid isn't embarrassed by their parents?
Rebecca plays this role with wit and humour; in the wrong hands, this quirky character could come out looking bad, but Rebecca plays her as caring, and concerned about her family... she really adds to the scenes that she's in, and is pretty much the voice of sanity out of all the characters in the show.
I've never seen Rebecca in anything other than "Alice, I Think", but she seems to be a good actress, and I'd like to see her in more shows.