Probably grand theft auto. Where death isn't permanent and a you only have to stay in jail for a few seconds before respawning. =D Not to mention having the ability to drive any car and shoot everything up!
I'd go into any Metroid game (specifically Super Metroid). It'd be nice to experience the entire Metroid universe other than what Samus happens to be doing at the time.
The button I carry around doesn't necessarily make things EASIER...