I remember one that happened because I was in the middle or re-reading my Complete Holmes. I guess I was just tuned in to the Holmes vibe. I came home one day and saw one of my roommates sitting on the couch watching TV.
Me: I see you just got home.
Him: Yeah, how’d you know?
I rattled off four reasons that I knew he had arrived not long before me. One was where his jacket was hanging, another was the full ashtray, etc.
Him: Dude. You have got to stop reading Holmes!
I was watching ‘Young Sherlock Holmes’ and after the credits the film continued with an extra scene.
I deduced that the maths teacher in the film would turn out to be Professor Moriarty. 
Was he teaching the Binomial Theorem?
“You amaze me, Holmes”
OK, I admit that was pretty obvious. I mean it had to be that or The Dynamics of The Asteroid, which is an unlikely subject for a maths teacher. I’ve seen the movie but am not sure if I went beyond the credits, so I wanted confirmation from glee.
In other words, “Elementary,” said he.
Not too much to brag about myself, although I love Holmes and Watson. I deduced once that my young son had had a forbidden piece of candy after I left the kitchen and came back later to find the wrapper in the garbage. Some hours had passed so it could have been someone else in the house, but I knew there was no more likely suspect. He immediately confessed when I asked, so I felt vindicated.
My wife and sons will tell you that I am wont to say, “You see, but you do not observe.” 