Well I'm currently writing a crossover fanfiction story between Stargate and Quantum Leap, postulating that in both universes MacGyver was a TV show. Sam Beckett, having leaped into Daniel Jackson, takes one look at O'Neill and says 'Oh boy, you used to be MacGyver!' Especially since he thinks he must be on a film set when a finds a zat in his hand.
So in my story, MacGyver was played by Richard Dean Anderson, an actor who coincidentally happens to bear a strong physical resemblance to Jack O'Neill - who'da thunk it?
One of those - he entered a look-alike contest and came third! sorta scenarios.
But that just happens to be how I feel about it. What do you think?