Scored a free copy of Pokémon Pinball last weekend (I was willing to pay for it, but the guy at the used game store said he just wanted to get rid of his surplus of copies). It's a HAL-developed portable pinball title, preceded by their other efforts such as Revenge of the 'Gator and Kirby's Pinball Land, and they did an excellent job leveraging the popularity of the Pocket Monsters by incorporating their imagery pretty much everywhere. The built-in rumble feature is a fun gimmick, although it does require its own single AAA battery to function and necessitates an awkwardly large cartridge design to house the vibe component.
Pikachu also figures heavily into gameplay, serving primarily as the kickback mechanism for both tables' outlanes. When Pikachu is activated, you get a scratchy "Piiii-KAAA!" and the rumble goes nuts for a couple seconds before it tosses the ball back onto the main table, which is really cute. I also love how they managed to squeeze all 151 original monsters into the game, complete with Pokédex entries. This definitely feels like a game made at the height of late-nineties Poké-mania.