I go to galleries all day on Friday and Saturday. Today was one of those once-a-year occasions that I was late to work and soaking wet (it started raining after I left my apartment without an umbrella) in order to see one show as soon as it opened.  Richard Serra at Gagosian.  (see it on the top five) My only complaint with the recent Richard Serra Retrospective at the Moma was all the people. This morning I was the only one in the gallery (besides the 6+ security guards) and it was amazing to walk quietly and alone though the massive sculptures.  I suggest going when they open at 10 (especially if it's raining).