I read the first few "Bidenisms" and couldn't figure out what was unusual, gaffe-like, or even midly interesting or amusing about them.

So he used the phrase "they're doing a heck of a job", which "echoed" Bush's "heck of a job, Brownie!" comment?

Er, no it didn't. The whole point about Bush's use of that phrase was that it came at a moment when it was clear that Brown was doing quite the opposite of a "heck of a job", and that's why everyone latched onto the phrase. Bush used expressions like that every day of his life, the only reason that one was noteworthy at all was because we were all waiting with bated breath to see what he would say about the utterly disastrous handling of the katrina disaster, and pretty much all expected Brown to be jettisoned right there.

I thought Biden's "For God's sake don't take airplanes!" interview was kind of funny, but actually also sort of refreshing, that he's not always on script but says what he's actually thinking. Other than that however, your attempt to make some sort of "Bidenism" feature to match "Bushisms" just strikes me as another typical conservative-fearing false equivalence festival.