We rented “Gnomeo & Juliet” the other night, and I enjoyed it much more than I imagined I would. The premise sounded too weird — garden gnomes in a takeoff of “Romeo & Juliet”?? — but it actually made sense. I laughed at lame jokes like “may he rest in pieces” or clever bits like the “Terrafirminator” lawn mower commercial, I tapped my feet to the Elton John songs, and I felt smart when I got some of the references to the Shakespeare play. I guess it pays to be open-minded sometimes.