The Bat Skiboat, from Batman Returns. Batman used this unique vehicle to travel through Gotham's sewers and break into the Penguin's lair.
The decorative Batmobile as used in Batman Forever. As a toy it looks great, as a live action Batmobile I'm not so sure.
The decorative biochemical theme is retained for the Batman Forever Batboat.
The Batmobile from Batman & Robin, the film that George Clooney is still apologising about.
The Redbird as used by Robin, also from the film Batman & Robin.