I used to watch Quantum Leap with my dad as a kid LOL. Good stuff. And more recently, Scott Bakula was in Star Trek Enterprise, which gets a thumbs up from me.
I read about Source Code and just didn't get the same feel. More like the super cheesy "7 Days" show than Quantum Leap. "Jump back as many times as it takes and stop the world getting blown up." Much less personal and much worse acting.
I'm really looking forward to it, in fact, seeing as it's the difficult second movie from the director of 'Moon'. I shall reserve judgement until I've actually seen it, however.