MIDSEASON FINALE: I’m going to miss this series while it’s gone, after this emotional holiday episode that finds Kristina back in the ICU. Peter Krause and Monica Potter, as Adam and Kristina, have done stellar work this year – work that tugs at my heart every time, and reminds me, as the closing credits roll, how few TV series are dealing with issues to which we all can relate. Watching Parenthood isn’t easy, but it’s endlessly rewarding. Just like parenthood.