Carl of theWAREHOUSE has a neat collection of Ripped Off Logos and Stolen Images. (Thanks Carl!)
I see your point (and his point on the website), but I'm going to disagree that this was deliberately ripping off the Thundercats stance. It's a parody of Mel Gibson in Braveheart (the kilt and the words make that clear), and the Thundercats resemblance is likely either subconscious or totally unintentional.
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