Parsed to its best songs, Stadium Arcadium may be the Red Hot Chili Peppers' greatest album. It certainly has a strong case: It's the band’s first No. 1 LP, winning five Grammys and selling more than 4 million copies in the U.S. But the double album runs more than two hours, so there’s much filler between the golden moments For every “Snow (Hey Oh)” and “Dani California," there’s a forgettable “Warlocks” or “21st Century” bringing things back to earth. The highs here are so astronomical that they more than outweigh the dull points. Still, it’s hard not to wonder how a pared-down version of the LP would be regarded.