Damn you've just made my sarcasm detector explode!
Ok to really narrow it down seeing as no one appears to have a clue, the game starts with J
Looking at our database it could be:
James Pond 2: Codename RoboCod
Jeanne d'Arc
Jim Power in Mutant Planet
Jimmy White's 'Whirlwind' Snooker
Jurassic Park
I'm willing to put someone else's money on Jimmy White's 'Whirlwind' Snooker.
Or Jetstrike.