SquirrelFish. WebKit’s JavaScript engine was no slouch, but that hasn’t stopped them from replacing it with a brand new “register-based, direct-threaded, high-level bytecode engine, with a sliding register window calling convention”. It runs 1.6x faster and has the Best Logo Ever.
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That paragraph made me laugh too :-) I have absolutely no clue whatsoever, regarding that (probably very concise) description...
There is a bootleg store in China called "Squirrel-shaped Fish". In China it's standard procedure for stores to illegally use names and logos from large international brands. With this store, they stole the Lacoste alligator logo, but made their own name. Pretty genius. I've heard that this is where the SquirrelFish name actually came from, not a renaming of GlassFish as I've seen other people quote.
http://chadvonnau.com/china/4/15.IMG_4485_bootlegs .jpg