The Batmobile from 1943.I've never liked the Batmobile as a concept. The movies and TV shows like it because it lets directors add car chases, but I've always thought it was cheesy, like Batman as Magnum PI.
Not really. Voice acting and live action really are different disciplines, with different requirements - consider, for example, the huge physical transformation Affleck went through in order to play the role. Or, conversely, that Hamill is great as the Joker, but probably wouldn't work in live-action.
(Of course, I do also wonder to what extent the individual performance is separable from the material that it is in - Clooney is likely to come last in the poll, but is that because he was poor in the role, or because "Batman & Robin" was execrable?)
To the best of my recollection, no. Though it was only one short scene in a fairly long piece, so I may be misremembering.
It's a nice touch to have Keaton entertain in the kitchen in the Flash movie.He puts up a mask, pretending to be billionaire playboy Bruce Wayne, but the real Bruce are Batman and that Bruce in the kitchen.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.