It's late (for me at least) and someone covered Donkey Kong already.
But if it makes you...
Jazz Jackrabbit (I seriously need to play this), Earthworm Jim (Groov-vey!), Darkstalkers, System Shock ("L-l-l-look at you hacker!"), Tekken, Marathon, and Daytona USA.
And Sonic 3, like I mentioned previously.
But honestly, I think '94 was a far better year for cartoons than video games.
Natural cracking, or induced?
Nah, I don't think it's natural. Every 12-15 or so minutes, if I stretch out my fingers or ball my hand into a fist, my knuckles crack.
Occasionally, my elbows crack. But only if I haven't moved them in a while. So I guess that much is natural.