Interesting question... I can only think of one instance, towards the end of Season 2 in 'Target: Jimmy Olsen!" where he ate popcorn and I think drank some soda with Sarah.
And there was a Superman interaction (though season 2, I know) -- remember when Jimmy's brakes went out in his car and Superman floats in casually to merely suggest turning off the engine? Oh, wait! I remember one from the first season -- in 'Pheromone, my lovely' Superman saves Jimmy from a truck about to run him over outside of the club where he was trying to impress April.
Hope that helps!
