Agree with the joke choices... They need to lose at least 90% of those. Save the humor for the joke post-question blurbs in lighter games like Glory Daze.
As far as the spelling errors, typos and poorly-researched questions go... Well, they happen, but far less often than in many places. For example, in most live-hosted trivia games (which I practically *never* play anymore), gaffes are common.
BT ain't perfect, but other than Jeopardy! and most other TV game shows, it's the best around.
That doesn't mean we shouldn't keep the Buzzies on their toes from time to time...