Here area couple that almost made the top ten...
To unlock doors and control panels, you’ve got to hack them via a neat minigame where a shiny ball is rolled around a circuit board to transfer sparks from one end to the other. The difficulty gets pumped up by having you take care of multiple sparks along multiple routes, in parallel. Eeep.
A Big Head mode is normally a rubbish afterthought. But Tools of Destruction’s Big Head Mode allows you to turn Ratchet’s conk, and those of your enemies, into balloon-like noggins that fill the screen. Marvelous.