Nimrod came along two years after 1995's Insomniac and was the first indication of Green Day's willingness to stretch the boundaries of punk rock. The fullness of the record is first hinted at on "Hitchin' a Ride," which starts out chug-a-lugging and then breaks into a raging rocker."Redundant" is accented with some psyched-out guitar work and has Billie Joe Armstrong singing a good deal more than usual. The wonderful "Platypus (I Hate You)" speed-rocks with abandon and recalls the early days of L.A. punk (a little Dickies here, a little Descendents there). The biting "Take it Back" is a snarling throwback to hard punk, and "Prosthetic Head" is an infectious ditty that counts among the very best on the album. Most surprising is "Last Ride In," an instrumental nod to the sensual surf-and-sun life. Of course, the crown jewel of the collection is the sentimental, acoustic "Good Riddance (Time of Your Life)," which seemed nearly inescapable when it was released. Beyond these standouts, even the "usual" Green Day fare here has punch.