Personally, I do find Dads to be funny, if a bit over the top. It certainly has proven talent in Martin Mull, Giovani Ribisi, and Peter Riegert. It could use some improvement in the writing as most of the characters seem one-dimensional.
Mom also has proven acting talent in Allison Janney and Anna Faris, but they are doing the best they can with really poor writing.
My favorite new sitcom by far is The Millers. There's a dysfunctional family with some fantastic actors and clever writing.