I'd only consider the bad things. Perhaps not telling them straight out but working on a way to help them avoid the event happening. Maybe then though, some of their good moments wouldn't happen. Oh crap, look what we've done!

Oracle: I'd ask you to sit down, but, you're not going to anyway. And don't worry about the vase.
Neo: What vase?
[Neo turns to look for a vase, and as he does, he knocks over a vase of flowers, which shatters on the floor]
Oracle: That vase.
Neo: I'm sorry...
Oracle: I said don't worry about it. I'll get one of my kids to fix it.
Neo: How did you know?
Oracle: Ohh, what's really going to bake your noodle later on is, would you still have broken it if I hadn't said anything?