Here area couple that almost made the top ten...
Roll up
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.
All’s swell
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.
