Let's get one thing out of the way immediately: Platinum Games' MadWorld is violent. A peek at the age-gated trailers should indicate as much. It's the topic that seemed to be on the minds of a roomful of European journalists today as Sega debuted the title at Games Convention. Amidst the fanfare surrounding this title, GameSpy's Wii Game of the Show at E3, they just wanted to see more of it. Although GameSpy didn't see a lot more, Sega revealed two more pieces of gameplay. It was less than they expected, which is not to say that waggling a chainsaw through someone's skull doesn't look enjoyable.
The motion-controlled maverick of a console that had everyone from age 9 to 99 swing a TV remote to bowl and painstakingly recreating themselves as Miis, had its share of hits, but even so, some titles didn’t quite get their due.

Beneath all the Smash and shovelware, the Wii really did have quite a few gems.
Not a bad list.. I would add Excitebots, Kororinpa 1 & 2, Bit.Trip series, Geometry Wars: galaxies

Keanu Reeves appearing in the trailer for Cyberpunk 2077 is far from the strangest celebrity video game appearance. Game Luster's Kate Mitchell highlights gaming's most unexpected voice acting moments.