I think rolins might be kidding you with those suggestions.
Anyway, what genres do you like and are you interested in CD games? Here's some US HuCards I'd recommend:
Aero Blasters - horizontal shooter
Alien Crush or Devil's Crush - pinball
Blazing Lazers - vertical shooter
Bomberman or Bomberman '93 - multiplayer party game
Dragon's Curse - action platformer with RPG elements...great game
Dungeon Explorer - five player Gauntlet-like game
JJ & Jeff - slightly odd platformer, but it plays well enough and good Turbo platformers are rare
Klax - falling tiles puzzler
Military Madness - hex strategy game
Motoroader - five player overhead racing
Neutopia or Neutopia II - Zelda clones
Ninja Spirit - mostly side-scrolling action game
Parasol Stars - part of Bubble Bobble series
R-Type - horizontal shooter
Raiden - vertical shooter
Soldier Blade -vertical shooter
Splatterhouse - you already know about this
Super Star Soldier - vertical shooter
As for Bonk games, I liked the first one the best. Revenge is longer, but I didn't like the way Bonk's spin was slowed down. The third game is just bad IMO. I'm also not too fond of Legendary Axe II, although the game has its fans. The first game is awesome though.