Every once in a while a show occurs which is so joyfully inventive that it’s almost too ridiculous. The Last Plot in Revenge rides that line sagely. It’s a spaghetti western, a puppet show, site-specific theater, sci-fi, a musical, and dinner theater, and at the same time it’s sneakily avant-garde and philosophical. It’s other things too, and it’s hard to talk about without actually blowing one surprise or another. If you’re in Philly, go see it. If you’re not, read my review on Art Attack.