I thought the fifth episode of Glee was the weakest of the lot – not enough emotional highs and lows with quirkiness pulling everything together – but I’m not giving up on this series!  On the other hand, Modern Family (ABC 9 p.m. Wednesdays) went from promising pilot to polished second episode.  The series is built around vignettes featuring three nuclear families that form an extended family – a brother and sister with mates and kids of their own are also linked to their father (yes, this is the show with “Al Bundy”), who has a new wife and stepson.  We’ll see how Modern Family evolves in coming weeks, but right now it looks promising.