Underrated actors, underrated show

I know this has probably been said before, but I believe that ALL the actors on this show were incredibly convincing in their roles. I notice that Yvette sort of changes from the first season (she's a little catty at first but then becomes more mature and toned-down). Anyway - like so many others, I wish that this show had gone on longer. I know it's hard to keep the concept going with the actors getting older, but they should have found a way because three seasons wasn't long enough!